The Census Bureau published final criteria for both census tracts and block
groups in the Friday, March 14, 2008 Federal Register. The notices,
"Census Tract Program for the 2010 Decennial Census--Final Criteria" and
"Census Block Group Program for the 2010 Decennial Census--Final Criteria,"
are available on the Federal Register's website at the following links:
Census Tract Final Criteria: <
http://a257.g.akamaitech.net/7/257/2422/01jan20081800/edocket.access.gpo.go…
>
Block Group Final Criteria: <
http://a257.g.akamaitech.net/7/257/2422/01jan20081800/edocket.access.gpo.go…
>
Both notices also will be available via the Census Bureau's Participant
Statistical Areas Program page at: <
http://www.census.gov/geo/www/psap2010/psap2010_main.html>
The block group notice announces the Census Bureau's decision that the
minimum population threshold for block groups will continue to be 600
persons.
Questions and requests for further information should be addressed to the
Geographic Standards and Criteria Branch, Geography Division, Census Bureau
via e-mail at <geo.psap.list(a)census.gov> or telephone at 301-763-3056.
______________________________________
Michael R. Ratcliffe
Chief, Geographic Standards and Criteria Branch
Geography Division
U.S. Census Bureau
4600 Silver Hill Road/ MS-7400
Washington, DC 20233-7400
301-763-8977
michael.r.ratcliffe(a)census.gov