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Census Tract Information
Form 477 requires broadband providers to
submit data on a census-tract basis. For the filing due
September 1, 2009, the Form 477 electronic filing system recognizes as valid the
same combinations of County and Census Tract codes
that were valid for the March 2009 filing.
The Federal
Financial Institutions Examination Council Geocoding System provides
a useful resource for matching individual service-location addresses to census tracts.
The Census Bureau provides additional guidance:
The entire area and population of a county are covered by census tracts.
Census tracts within a county are identified by a four-digit
basic number between 0001 and 9999, and may have a two-digit numeric
suffix ranging from .01 to .98; for example, 6059.02. The decimal point
separating the four-digit basic tract number from the two-digit suffix
is shown in Census Bureau printed reports and maps. However, in computer-readable
files prepared by the Census Bureau, the decimal point is implied, and
does not appear. See Geographic Terms and Concepts for
more information.
A census tract number may not be used more than once in a single county,
but it may be used again in a different county in the same state or in
a county in a different state. Therefore, a particular census
tract within the nation can be fully identified by: its state, its county,
and its census tract number. Alternatively, the particular census tract
can be identified by an 11-digit number consisting of a 2-digit code
for the state, a 3-digit code for the county (either
of which may include one or more “leading” zeros), and 6 digits for the census
tract (including any leading zeros, and also two “trailing” zeros
in the many cases in which the basic census tract number has no suffix).
For example, the Office of the California Secretary of State, located
at 1500 11th St, Sacramento, CA 95814, can be fully identified by the
11-digit number 06067000900, in which:
06 - identifies California,
067 - identifies Sacramento
County within California, and
000900
- identifies census tract 9 within Sacramento County.
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