2010 Census Redistricting Data Program
The Census Bureau has a program that affords state officials an opportunity before each decennial census to define the small areas for which they wish to receive census population totals for redistricting purposes.
Officials may receive data for voting districts (e.g., election precincts, wards) and state house and senate districts, in addition to standard census geographic areas such as counties, cities, census tracts, and tabulation blocks. State participation in defining areas is voluntary and nonpartisan.
The Bureau is incrementally publishing this data for the public to view in early 2011 through the interactive map tool below.
For more local area data, visit American FactFinder.