Address Check - Melissa Data

Address Check
Reference Guide

MELISSA DATA ADDRESS CHECK
Address Checking Process Explained
AddressCheck verifies and standardizes address data against the most current reference data
from the U. S. Postal Service®.
The programming logic used by AddressCheck is CASS Certified by the USPS. This stringent
certification ensures the quality of the data that is returned by the AddressCheck service and the
certifications are renewed every calendar year.
Steps to validate an Address
1. Decide on a target area to search - Use the ZIP Code/City & State Postal Code/Municipality/
Province fields to decide where to search for an address. If all three components agree the
match is attempted. If they don't agree, the logic favors the City & State over the ZIP/Postal
code field. If City & State cannot be reconciled, it uses the ZIP/Postal Code field.
2. Parse the address - breaks it into 9 possible categories of Range, Predirection, StreetName,
Suffix, PostDirection, SuiteName, SuiteNumber, PMBName, PMBNumber.
3. Look for that street name within the search area.
4. If street name is found, check the remaining address components such as directionals, suffix
and ranges. Fix what it possible and return back status codes indicating the results.
5. If street name is not found, use a combination of reparsing and fuzzy matching to locate candidate
records until a most likely candidate is found. Return back status codes indicating the
results.
6. Address Check service will Find Suggestions for candidate records. The Service returns possible
correct addresses if the logic was unable to verify or correct the submitted address.
The basic methodology for Address Check is using an exact match the input address is referenced
against the USPS or CanadaPost database. If the address cannot be matched the street name is
then soundexed and the address parsed attempted till it can either be phonetically matched or fail
matching. The Soundex algorithm works by stripping out consonants from street names and then
trying to match the remainder. Directionals, Street Suffixes and Street Names can be rectified in
some cases as well, but never an Address Range. The only time an Address Range can be fixed if
it is Rural Route renumber or LACSLink address or when the Address is coded by chasing the
Base alternate record. The City and State can be corrected only when the ZIPCode is valid and
the ZipCode can be corrected if the City State is valid.
Addresses are always returned standardized to postal specifications. Street becomes ST, Road
becomes RD, etc: Standardization means that some conversion was done on the address (for
example, changing Post Office Box to PO Box or abbreviating street suffixes)
Secondary Addresses
Secondary addresses include suite numbers, unit numbers and residential apartment numbers. It
could also refer to a private mailbox (PMB) at a Commercial Mail Receiving Agency (CMRA).
The secondary address can be passed to Address Check at the end the first address line, as the
second address line or via the Suite property. The National Postal database identifies certain pri-

mary addresses as high-rises, business parks and apartment buildings. Therefore, Address Check
would be able to assign the correct secondary address designator to the following address:
1234 Main St #101
For example, if the primary address were an apartment complex, Address Check would return "Apt
101" as the suite information.
CMRAs like the UPS Store and other mailbox stores are a special case. These are often located at
shopping centers and the store itself will have a suite number. This means that addresses located
at a CMRA will often have both a suite number and a PMB number, like this:
1234 Main Street
Suite C1 PMB#101
CMRAs are identified in the national address database as this kind of business.
Example:
1234 Main Street #101
Assuming that 1234 Main Street is identified in the national database as a CMRA, the "#101" portion
would be returned by the PrivateMailBox property rather than the Suite property. Be aware
that Address Object will always treat a second item of secondary address information as a PMB
number.
Example:
1234 Main Street
Suite C1 #101
Whether or not the primary address is identified in the database as a CMRA, Address Check will
identify the "#101" portion of the second line as a PMB number and return this number in the Private
Mailbox field.
Even if an address is identified as a CMRA, if a secondary address is explicitly identified as a suite
or anything other than private mailbox, this information will be treated as a suite and not a PMB.
Example:
1234 Main Street
Suite 101
Assuming that the primary address belongs to a CMRA, because the secondary address was supplied
as "Suite 101," this will be treated as a suite number and not a PMB number. If the number
101 was meant to refer to a PMB and there is not Suite 101 at this address, this would probably
cause the address to fail verification.
City or Postal Code Information
In order to verify an address, Address Check requires information on the city, the state or province,
and a ZIP or Postal code. With the city and the state/province, the Address Check will determine
the correct ZIP/Postal code and use this to verify the address. Conversely, if supplied with a correct
ZIP/Postal code, Address Object can look up the city and the state/province.
Therefore either the ZIP/Postal code or the city plus the state/province are required. If the supplied
city and state/province do not match the ZIP/Postal code, Address Check will use the city and
state/province to look up the ZIP/Postal code.

Geocoding
If an address can be validated, Melissa Data will also return geocode information for that address.
The service will geocode addresses to the 9 digit ZIP + 4 level, returning latitude and longitude to
the centroid of the ZIP + 4. If the ZIP + 4 level is not available, we will geocode to the seven-digit
ZIP + 2 level. If ZIP + 2 is not available, we will then geocode to the five-digit zip level. The Results
field will contain a code indicating which level the address was geocoded to. Other geocode information
available include Census Tract, Census Block, County FIPS, county name, time zone, and
CBSA are also returned.
Anatomy of a Request
A request to the Address Check service consists of an address, plus several other crucial pieces of
information.
The address can be submitted in one of two ways. The first is as separate fields, like this:
Company Name: Microsoft, Inc.
Address Line: One Microsoft Way
City: Redmond
State: WA
ZIP: 98052-6399
The entire address can also be submitted as a single string to the AddressField, like this:
Address Line: One Microsoft Way, Redmond, WA, 98052-6399
When submitting an address, it is required that you have a valid city and state OR a valid ZIP
Code. For the above example, both would of the following would be consider verifiable addresses:
Address Line: One Microsoft Way, Redmond, WA
Address Line: One Microsoft Way, 98052-6399
Suggestions
If address cannot be verified as is, Address Check will return one or more suggestions, which represent
possible alternatives to the submitted address.
If the address can be verified, the Address Check will return a single suggestion, which is the verified
submitted address.
Use the MaximumSuggestions field to limit the number of suggestions returned.
Confidence
Each address suggestion returned is assigned a confidence value from 0 to 1, which indicates how
certain Address Check can be that the suggestion represents the actual address. A successfully
verified address will have a confidence score of 1.0, indicating 100% confidence. If the submitted
address is not verified, then the each suggestion will be returned in order of highest confidence
score first.
Use the MinConfidence field to filter out all suggestions that do not meet a certain confidence
level. Address Check will not return a suggestion with a confidence lower than 0.25.

Request Fields
BatchID
The following list of the fields that are either required for each request or may only be found in
some requests. See descriptions.
This field accepts a batch ID number which can used to match the response to the related request.
MaximumSuggestions
If MaximumSuggestions is 5, and there are seven possible suggestions, Address Check will return
the first five in order of confidence level. If MaximumSuggestions is not set, Address Check will
return all suggestions that exceed the MinConfidence number.
MinConfidence
Every suggestion is assigned a confidence rating that indicates the probability that the suggestion
is the correct match for the submitted record. The rating can range from 0 to 1. Only exact matches
receive a confidence of 1 (100% certainty of a match).
Setting a minimum confidence level filters out any record that does not have a confidence rating
match that level or higher.
In otherwords, setting a MinConfidence of “0.75” will prevent any suggestion with a confidence
lower than 0.75 from being returned.
The confidence level is based on the Result codes. See the entry for the Result field on page 7for
an explanation of how different results
RecordID
This can be any unique identifier assigned to each record, which allows the applications to match
the return data to the original record.
CompanyName
Required. The official business name associated with the submitted address.

AddressLine
City
State
ZIP
Mailbox
Country
Culture
Required. At the minimum, this line will field the street address, although it can also contain the
entire address as a single string. For example:
"One Microsoft Way"
or
"One Microsoft Way, Redmond, WA 98052-6399"
Use this field to submit the city portion of the address when this information is not included in the
AddressLine field.
Use this field to submit the state portion of the address when this information is not included in the
AddressLine field.
Use this field to submit the five or nine-digit ZIP Code portion of the address when this information
is not included in the AddressLine field.
Use this field to submit the secondary address portion (suite or private mailbox) of the address
when this information is not included in the AddressLine field.
Use this field to submit the name or abbreviation of the address when this information is not
included in the AddressLine field.
Use this field to specify the culture for the current request.

Response Fields
See the listing below for a description and explanation of every field returned by the Address
Check service.
Per Response
The following frields are returned once per response.
StatusCode
This field returns the HTTP status code, indicating the success or failure of the most recent
request.
StatusDescription
BatchID
This field returns the descriptive that matches the HTTP status code returned by the StatusCode
field.
Status Code
This field returns the batch ID number submitted to the related request.
TotalRecords
Status
Description Details
200 OK The request os
400 Bad Request The request contained an error.
401 Unauthorized Access was denied. You may have entered your credentials
incorrectly, or you might not have access to the requested
resource or operation.
404 Not Found The requested resource was not found.
500 Internal Servier Error Your request could not be completed because there was a
problem with the service.
503 Service Unavailable There's a problem with the service right now. Please try again
later.
This field returns the total number of records included in the response.

Per Record Fields
RecordID
The following fields are returned with each individual record.
This field returns the content of the RecordID frield from the original requestion, making it possible
to match the returned suggestions with the original address records.
ResponseRecordID
This field returns the Response Record ID.
Confidence
Results
Each suggestion has a confidence level, from 0 to 1, with 1 indicating 100% confidence that the
suggestion is a valid address record that matches a deliveraby.
Only the first suggestion returned can have a confidence of 1.0, indicating high confidence of a
match. If the first suggestion has a confidence of 1.0, no other suggestions will be returned.
Results returns a comma-delimited list of four-character codes that indicate several points of information
about the current record.
Information will include: the level of matching between the input record and the Address Check
databases; the reasons for a failure to match; plus indicators for changes to the input data during
standardization.
Result codes are also used to calculate the confidence level for each suggestions. This table
shows the possible codes, their definitions and how they affect the confidence score.
Code
Conf.
Reduc
ed Meaning Details
AS01 Address Matched to Postal
Database
Status Result Codes
Street Address is valid and deliverable. Check
AE08 and AE09 for full deliverability.
AS02 Street Address Match Address street matched to USPS database but a
suite was missing or invalid.
AS09 Foreign Postal Code Detected Postal Code from a non-supported foreign country
detected. A US or Canadian Postal Code can also
return this error if the US or Canadian data files
are not initialized.
AS10 Address Matched to CMRA
(U.S. Only)
Address belongs to a Commercial Mail Receiving
Agency (CMRA) like The UPS Store ® .

Code
Conf.
Reduc
ed Meaning Details
AS13 Address has been Updated by
LACS Link (U.S. Only)
AS14 0.05 Suite Appended by Suite Link
(U.S. Only)
AS15 0.07 Suite Appended by
AddressPlus (U.S. Only)
Address has been converted by LACS Link® from a
rural-style address to a city-style address.
A suite was appended by Suite Link using the
address and company name.
A suite was appended by AddressPlus using the
address and last name.
AS16 0.60 Address is vacant Address has been unoccupied for 90 days or
more.
AS17 0.25 Alternate delivery Address does not receive mail at this time.
AS18 Y DPV Locked Out (U.S. Only) DPV ® processing was terminated due to the
detection of what is determined to be an artificially
created address. No address beyond this point has
been DPV validated.
AS20 Y This address is deliverable by
USPS only. (U.S. Only)
Alternate carriers such as UPS and Fed Ex do not
deliver to this address.
AS22 Y No suggestions. (U.S. Only) No suggested alternatives were found.
AS23 Extraneous Information Found Information found in input street address that was
not used for verification. This information was
returned by the GetParsedGarbage function.
Error Result Codes
AE01 Zip Code Error The Postal Code does not exist and could not be
determined by the city/municipality and state/
province.
AE02 Unknown Street Error An exact street name match could not be found
and phonetically matching the street name
resulted in either no matches or matches to more
than one street name.
AE03 Component Mismatch Error Either the directionals or the suffix field did not
match the post office database, or there was more
than one choice for correcting the address.
AE04 Non-Deliverable Address Error The physical location exists but there are no
homes on this street. One reason might be railroad
tracks or rivers running alongside this street, as
they would prevent construction of homes in this
location.
AE05 Multiple Match Error Address matched to multiple records. More than
one record matches the address and there is not
enough information available in the input address
to break the tie between multiple records.
AE06 Early Warning System Error
(U.S. Only)
AE07 Missing Minimum Address
Input Error
This address has been identified in the Early
Warning System (EWS) data file and should be
included in the next postal database update.
Minimum required input of address/city/state or
address/zip not found.

Code
Conf.
Reduc
ed Meaning Details
AE08 Suite Range Invalid Error The input street address was found but the input
suite number was not valid.
AE09 Suite Range Missing Error The input street address was found but a required
suite number is missing.
AE10 Primary Range Invalid Error The street number in the input address was not
valid.
AE11 Primary Range Missing Error The street number in the input address was
missing.
AE12 PO, HC, or RR Box Number
Invalid Error (U.S. Only)
AE13 PO, HC, or RR Box Number
Missing Error (U.S. Only)
AE14 0.30 CMRA Secondary Missing
Error (U.S. Only)
The input address PO, RR or HC number was
invalid.
The input address is missing a PO, RR, or HC Box
number.
Address Matched to a CMRA Address but the
secondary (Private mailbox number) is missing.
AE17 Suite Range Extraneous Error A suite number was entered but no suite
information found for primary address.
AE19 Y FindSuggestion time-out (U.S.
Only)
Change Codes
Time allotted to FindSuggestion was exceeded.
AC01 0.10 ZIP Code Change The five-digit ZIP Code was added or corrected
based on the city and state names.
AC02 State Change The state name was corrected based on the
combination of city name and ZIP Code.
AC03 0.07 City Change The city name was added or corrected based on
the ZIP Code.
AC04 Base/Alternate Change Some addresses have alternate names, often
chosen by the owner or resident for clarity or
prestige.
This change code indicates that the address from
the official, or “base,” record has been substituted
for the alternate.
AC05 Alias Change An alias is a common abbreviation for a long street
name, such as “MLK Blvd” for “Martin Luther King
Blvd.”
This change code indicates that the full street
name has been substituted for the alias.
AC06 0.05 Address1/Address2 Swap The value passed to SetAddress could not be
verified, but SetAddress2 was used for verification.
The value passed to the SetAddress function will
be returned by the GetAddress2 function.
AC07 0.05 Address1/Company Swap A Company name was detected in address line 1
and moved to the GetCompany function.
AC08 0.25 Plus4 Change A non-empty Plus4 was changed.

Code
Conf.
Reduc
ed Meaning Details
AC09 0.30 Urbanization Change The Urbanization was changed.
AC10 0.10 Street Name Change The street name was changed due to a spelling
correction.
AC11 0.02 Suffix Change The street name suffix was corrected, such as
from “St” to “Rd.”
AC12 0.06 Street Directional Change The street pre-directional or post-directional was
corrected, such as from “N” to “NW.”
AC13 0.01 Suite Name Change The unit type designator for the secondary
address was changed, such as from “STE” to
“APT.”
GS01 Nine-digit geocoding
successful.
GS02 Seven-digit geocoding
successful.
GS03 Five-digit geocoding
successful.
GeoCoder Results
Parsing Results
Record was coded to the ZIP + 4 centroid.
Record was coded to the ZIP + 2 centroid.
Record was coded to the 5-digit ZIP Code
centroid.
RE01 Unrecognized Data. The return value of the GetUnrecognized function
has been populated.
RS01 Parse Successful The contents of Address1 were successfully
parsed.
For convenience’s sake, here is a list of of the result codes that affect the confidence score.
Code Conf. Reduced Meaning
AS14 0.05 Suite Appended by Suite Link (U.S. Only)
AS15 0.07 Suite Appended by AddressPlus (U.S. Only)
AS16 0.60 Address is vacant
AS17 0.25 Alternate delivery
AE14 0.30 CMRA Secondary Missing Error (U.S. Only)
AC01 0.10 ZIP Code Change
AC03 0.07 City Change
AC06 0.05 Address1/Address2 Swap
AC07 0.05 Address1/Company Swap
AC08 0.25 Plus4 Change
AC09 0.30 Urbanization Change
AC10 0.10 Street Name Change
AC11 0.02 Suffix Change
AC12 0.06 Street Directional Change

CompanyName
This field returns the contents of the CompanyName field submitted with the request.
AddressLine
This field returns the standardized contents of the orginal AddressLine field submitted with the
request.
AddressLine2
If the submitted address contained two distinct delivery addresses (a street address and a PO
Box, for example), the second would be returned here.
This address line would not be used for address verification.
PrivateMailBox
Suite
City
State
Code Conf. Reduced Meaning
AC13 0.01 Suite Name Change
If the submitted address represents a mailbox at a Commercial Mail Receiving Agency (CMRA),
that information will be returned here.
If the submitted address represents a highrise address with secondary address information, the
secondary address (suite number will be
This field returns the full city name. This may be the exact city name submitted with the request or
the city name determined according to the submitted ZIP Code, if no city name was included.
This field returns the state abbreviation. This may be the exact state code submitted with the
request or the value determined according to the submitted ZIP Code, if no state was included.

ZIP
Plus4
This field returns the five-digit ZIP Code, not including the four-digit extension to the ZIP + 4. This
will either be the ZIP Code submitted with the original request or the correct ZIP Code based on
the values of the City and State fields.
This field returns the four-digit extension of the full ZIP + 4. This value will not be returned if the
address cannot be verified.
CarrierRoute
This field returns the Carrier Route code for a verified address. This value allows an address to be
grouped with records for addresses serviced by the same mail carrier.
The first character of this Carrier Route is always alphabetic and the last three characters are
numeric. For example, “R001” or “C027” would be typical carrier routes. The alphabetic letter indicates
the type of delivery associated with this address.
B = PO Box
C = City Delivery
G = General Delivery
H = Highway Contract
R = Rural Route
DeliveryPointCode
This field returns the two-digit Delivery Point code. The Delivery Point code usually consists of the
last two digits of the street number.
DeliveryPointCheckDigit
This field returns the Delivery Point Check Digit, a single-digit value that makes up the final digit of
the Address Key returned below.
AddressKey
This field returns the Address Key, a unique 12-digital value that identifies the specific address represented
by the current record. The Address Key consists of the nine-digit ZIP + 4 (without any
dashes), the Delivery Point Code and the Delivery Point Check Digit.

Latitude
This function returns the latitude for the submitted location.
Latitude is the geographic coordinate of a point measured in degrees north or south of the equator.
Address Check uses the WGS-84 standard for determining latitude.
Since all North American latitude coordinates are north of the equator, this value will always be
positive.
Longitude
This function returns the longitude for the submitted location.
Longitude is the geographic coordinate of a point measured in degrees east or west of the Greenwich
meridian. Address Check uses the WGS-84 standard for determining longitude.
Since all North American longitude coordinates are west of the Greenwich meridian, this value will
always be negative.
Urbanization
Country
This friend returns the urbanization name for the submitted address.
Urbanization will only be returned for addresses located in Puerto Rico. The value is used to break
ties between similar addresses in the same ZIP Code.
This field returns the standard abbreviation for the nation, U.S. or Canada, where the submitted
address is located.
CongressionalDistrict
For U.S. addresses, this field returns the state abbreviation and number of the congressional district
that represents that location. For example, an address in the first district in California would
return “CA01.”
For states with only one congressional representative, the value “01” is returned.
AddressTypeCode
This field returns a code indication the type of location represented by the address.
For U.S. addresses, RDS would return one of the following codes.
Code String
A Alias
F Firm or Company address

Code String
G General Delivery address
H High Rise or Business complex
P PO Box address
R Rural Route address
S Street or Residential address
For Canadian addresses, RDS would return one of the following codes.
Code String
1 Street
2 Street Served By Route and GD
3 Lock Box
4 Route Service
5 General Delivery
B LVR Street
C Government Street
D LVR Lock Box
E Government Lock Box
L LVR General Delivery
K Building
The string is returned by the next field, AddressTypeDescription.
AddressTypeDescription
This field returns the descriptive text connected to the value returned by the AddressTypeCode
field.
For possible values, see the lists under AddressTypeCode.
CountyName
This field returns the name of the county where the submitted address is located.
CountyFips
This field returns the five-digit FIPS code for the county where the submitted address is located.
The Federal Information Processing Standard (FIPS) is a five-digit code defined by the U.S.
Bureau of Census. The first two digits are the state code and the last three indicate the county
within the state.
For Example: “06037” is the County FIPS for Los Angeles, CA (“06” is the state code for California
and “037” is the county code for Los Angeles).

PlaceCode
This field returns the seven-digit Census Bureau place code associated with the sumbitted location.
ZIP Code boundaries sometime overlap with city limits and unincorporated areas. The ZIP Code
may place a location within one city even though it is physically located within a neighboring area.
The place code matches the ZIP + 4 code with the Census bureau’s official name for that physical
location.
PlaceName
This field returns the Census Bureau place name associated with the submitted location.
ZIP Code boundaries sometime overlap with city limits and unincorporated areas. The ZIP Code
may place a location within one city even though it is physically located within a neighboring area.
This field returns the Census bureau’s official name for the ZIP + 4 code.
For example, the 92688 ZIP Code is located mostly within the city of Rancho Santa Margarita.
However, it also contains parts of the unincorporated area of Los Flores. For these ZIP + 4 codes,
the GetCity function of Address Object would return “Rancho Santa Margarita,” but this function
will return “Los Flores.”
TimeZoneCode
This field will return a numeric code for the time zone where the submitted address is located.
This is a list of the possbile values:
Code Name Code Name
0 Military (APO or FPO) 9 Alaska Time
4 Atlantic Time 10 Hawaii Time
5 Eastern Time 11 Samoa Time
6 Central Time 13 Marshall Islands Time
7 Mountain Time 14 Guam Time
8 Pacific Time 15 Palau Time
The numbers corresponded to difference between the time zone and Greenwich meridian time.
TimeZoneName
This field returns the name associated with the value returned by TimeZoneCode.

CBSACode
This field returns the five-digit code for the Core Based Statistical Area (CBSA).
Metropolitan and micropolitan statistical areas (metro and micro areas) are geographic entities
defined by the U.S. Office of Management and Budget (OMB) for use by Federal statistical agencies
in collecting, tabulating, and publishing Federal statistics. The term "Core Based Statistical
Area" (CBSA) is a collective term for both metro and micro areas. A metro area contains a core
urban area of 50,000 or more population, and a micro area contains an urban core of at least
10,000 (but less than 50,000) population. Each metro or micro area consists of one or more counties
and includes the counties containing the core urban area, as well as any adjacent counties
that have a high degree of social and economic integration (as measured by commuting to work)
with the urban core.
CBSATitle
This field returns the official name for area represented by the CBSA Code.
CBSALevel
This field returns the level description for the CBSA represented by the CBSACode field, either
micropolitan or metropolitan.
CBSADivisionCode
This field returns the numeric code for the division within the Core Based Statistical Area containing
the submitted address.
Some CBSA’s are broken into parts known as divisions. In this case, the CBSA Division fields will
also be populated. If not, these fields will be empty. Each division also has a Code, Level and Title.
CBSADivisionTitle
This field returns the official name for area represented by the CBSA Division Code.
CBSADivisionLevel
This field returns the level description for the CBSA Division represented by the CBSADivision-
Code field, either micropolitan or metropolitan.

CensusBlock
This field returns the Census Block number for the submitted location.
Census blocks, the smallest geographic area for which the Bureau of the Census collects and tabulates
decennial census data, are formed by streets, roads, railroads, streams and other bodies of
water, other visible physical and cultural features, and the legal boundaries shown on Census
Bureau maps.
A Census Block Group is a cluster of blocks having the same first digit of their 3-digit identifying
numbers within a Census Tract or Block Numbering Area (BNA). For example, Census Block
Group 3 within a Census Tractor BNA includes all blocks numbered between 301 and 397. In most
cases, the numbering involves substantially fewer than 97 blocks. Census Block Groups never
cross Census Tract or BNA boundaries, however, they may cross the boundaries of county subdivisions,
places, American Indian and Alaskan Native areas, urbanized areas, voting districts, and
congressional districts. Census Block Groups generally contain between 250 and 550 housing
units, with the ideal size being 400 housing units.
Census Blocks are small areas bordered on all sides by visible features such as streets, roads,
streams, and railroad tracks, and by invisible boundaries such as city, town, township, county limits,
property lines, and short, imaginary extensions of streets and roads.
This returns a 4-character string value. The first digit is the Block Group and the last three characters
(if any) are the Block Number.
Example: “103A” (Block Group is 1 & Block Number is 3A)
CensusTract
This function returns the Census Tract number for the submitted location.
Census Tracts are small, relatively permanent statistical subdivisions of a county. Census Tracts
are delineated for all metropolitan areas (MA’s) and other densely populated counties by local census
statistical areas committees following Census Bureau guidelines (more than 3,000 Census
Tracts have been established in 221 counties outside MA’s).
The Census Tract is usually returned as a 4-digit number. However, in areas that experience substantial
growth, a Census Tract may be split to keep the population level even. When this happens,
a 6-digit number will be returned.
Unrecognized
This field returns any fragments of the submitted AddressLine field that could not be successfully
parsed.