National TV Toolbox User Guide - Nielsen

Market Section Market Break Description
County Size
A
B
C
D
NHTI C & D
Based on the population and
metropolitan location of the county in
which the household is located.
The four county size groups are
defined as follows:
• A - All counties belonging, as
of June 30, 1999, to the
largest metropolitan areas,
which together account for
40% of U.S. households
according to the 2000
Census.
• B - All counties in the next
largest set of metropolitan
areas which together account
for 30% of U.S. households.
• C - All counties in the next
largest set of areas -
including both metropolitan
areas and non-metropolitan
counties, which account for
15% of U.S. households.
• D - All remaining counties.
DMA Rank Rank 1-10
Rank 11-25
Rank 26-49
Rank 50+
The rank (based on number of TV
households) of the DMA (designated
market area) to which the
household's state/county is
assigned.
DVD Owner
DVR Household
Rank 100+
No
Un
Yes
DVR Household
Non-DVR Household
Based on whether the household
has a digital video disk player.
A household that has a device
(Digital Video Recorder) that
enables the user to watch, pause,
playback, and/or record live
television.
HH Income