Bureau of the Census Geographically Updated Population Certification Program

Following the 1970 decennial census and every decennial census thereafter, the Bureau of the Census (Census Bureau) has provided the opportunity for county, local, and tribal governments to obtain certified population and housing unit counts for areas in which their boundaries have changed from those used to tabulate the results of the immediately preceding decennial census. These changes might occur either as the result of newly created governmental units (incorporations), additions to existing governmental units (annexations), the combination of two existing governmental units (merger), or other circumstances. These governmental units are established by law for the purpose of implementing specified general- or special-purpose governmental functions; the certification process is available to both.

Agency Contact: Rodger V. Johnson, Population Division, U.S. Census Bureau, Room 2324, Federal Building 3, Washington, DC 20233, (301) 763-2419, by fax (301) 457-2481, or e-mail (rodger.v.johnson@census.gov).