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| | [No title] (Site not responding. Last check: 2007-11-07) |
 | | Census tract numbers range from 0001 through 9499.99 and are unique within a county (numbers in the range of 9501 through 9989.99 denote a block numbering area). |
 | | Census County Division (CCD) Census county divisions (CCD's) are subdivisions of a county that were delineated by the Census Bureau, in cooperation with State officials and local census statistical areas committees, for statistical purposes. |
 | | Census Code Census codes are assigned for a variety of geographic entities, including American Indian and Alaska Native area, census division, census region, county subdivision, place, State, urbanized area, and voting district. |
| www.columbia.edu /acis/eds/dset_guides/census/stf3docs/append_a.asc (8561 words) |
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