United States yearbook - 1982 (1)

Population Center—Coastal Shorelines 7
N o . 3 . C e n t e r o f P o p u l a t i o n : 1 7 9 0 t o 1 9 8 0
[“Center of population" Is that point at which an imaginary flat, weightless, and rigid map of the United States Would balance if
weights of identical value were placed on It so that each weight represented the location of one person on the date of the census]
YEAR*
North
latitude
West
longitude
Approximate location
1790 (Aug. 2)................................ 39 16 30 76 11 12 23 miles east of Baltimore, Md.
1850 (June 1)................................ 38 59 0
1950 (Apr. 1)'.................................. 3fi SO pi
1960 (Apr. 1)..................................
1970 (Ajar. 1).................................. 38 27 47
1980 (Apr. 1).................................. 38 8 13 90 34 26
23 mites southeast of Parkersburg, W. Va.
6 miles southeast of Columbus, Ind.
8 miles north-northwest of Olney, Richland County, III.
In Clinton Co. about S ¥z miles northwest of Cantralia, III.
5.3 miles east-southeast of the Mascoulah City Hall in SI Clair
County, III.
Y* mile west of De Soto in Jefferson County, Mo.
1For dates of admissions of the States and changes in areal definition, see “State Origins and Boundaries,’’ U n ite d S ta te s
S u m m a ry , U S . C e n s u s o f P o p u la tio n : 1 96 0, vol. I. For year of admission to statehood, see table336.
Source: U.S. Bureau of the Census, C e n s u s o f P o p u la tio n : 1 970, vol. I.
N o . 4. R e s i d e n t p o p u l a t i o n a n d P o p u l a t i o n D e n s i t y in C o u n t i e s W i t h i n 5 0 M i l e s o f C o a s t a l
S h o r e l i n e s : 1 9 4 0 t o 1 9 8 0
[As of April 1 and based on census data. Excludes Alaska and Hawaii. Covers 611 counties and Independent cities which are
entirely or substantially within 50 miles of U.S. coastal shorelines. Great Lakes region includes St. Lawrence River]
YEAR
Conterminous,
U.S.,
total
COUNTIES IN COASTAL REGIONS
Total Atlantic Pacific
Great
Lakes
Gulf of
Mexico
Balance
of U.S.
Land area, 1970 (1,000 sq. mi.)........................................ 2,964 468 122 118 134 94 2,496
POPULATION
1940 (mil.)...................................................................... 131.7 60.5 29.9 7.5 18.9 4.2 71.2
1950 (mi!.)...................................................................... 150.7 73.5 34.0 11.5 21.8 5.6 77.2
1960 (mil. ....................................................................... 178,5 92.7 41.7 16.8 26.4 7.8 B5.7
1970 (mil.)....................................................................... 202.2 108.5 48.2 21.5 29.3 9.5 93.8
1980 (mil.)....................................................................... 225.2 118.4 50.7 25.4 29.8 12.6 106.7
1940 (percent)................................................................. 100 46 23 6 14 3 54
1950 (percent)................................................................. 100 49 23 6 15 4 51
1060 (percent)................................................................. 100 52 23 9 15 4 46
1970 (percent)................................................................. 100 54 24 11 15 5 46
i960 (percent)............................................ .................... 100 53 23 11 13 6 47
Population per square mile:
1940...................................................................... * .................... 44.4 129.2 244.4 64.1 140.9 44.8 26.5
1950.......................... ............... 60.8 157.2 283.3 97.6 162.9 59.8 30.9
I9 6 0 .......................... .............. 60.2 196.3 341.6 142.7 197.3 83.1 34.3
1970.......................... ............... 68.2 232.0 394.4 182.5 219.1 101.1 37.6
I 9 6 0 1........................ .............. 76.0 253.3 414.9 215.8 222.4 134.1 42.6
’ Based on 1970 land area.
Source: U.S. Bureau of the Census, compiled from unpublished data.