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Reference
American Community Survey 2005-2009

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Abstract

The U.S. Census Bureau’s American Community Survey (ACS) is part of the 2010 Decennial Census Program. The ACS is a nationwide survey that provides annually updated, detailed demographic, socioeconomic, and housing information for communities across the United States and Puerto Rico.

By its sample design, the ACS accumulates independent monthly sample data as time passes. This allows for the release of estimates for smaller geographic areas once enough sample has been accumulated.

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ACS Release Strategy

This chart explains the ACS release strategy, as it will unfold over the coming years.

Data Product Population Threshold Year of Data Release
  2006 2007 2008 2009 2010 2011 2012 2013
1-year Estimates 65,000+ 2005 2006 2007 2008 2009 2010 2011 2012
3-year Estimates 20,000+     2005–
2007
2006–
2008
2007–
2009
2008–
2010
2009–
2011
2010–
2012
5-year Estimates All Areas         2005–
2009
2006–
2010
2007–
2011
2008–
2012

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The 2009 ACS will provide data for a set of geographic areas with a total population of 65,000 or more. The annual sample size expanded from about 800,000 addresses in 1,240 counties in 2004 to approximately 3 million addresses in 3,357 U.S. school districts in 2009. As a result, the 2009 ACS data provide information for many geographic areas that did not receive ACS data in previous years.

ACS 2006-2009 Geography Coverage

The table below shows the geographic levels covered by the 2009 data release with an estimate of the total number of geographic areas that will receive the 2009 ACS data:

Type of Geographic Area Areas with a Population of 65,000 or More Areas with a Population of 20,000 or More Total Number of Entities for this Type of area
  Count Percent of all such areas Count Percent of all such areas  
United States 1 100 1 100 1
Region 4 100 4 100 4
Division 9 100 9 100 9
State 52 100 52 100 52
County2 802 24.9 1887 58.6 3,220
County Subdivision 188 0.9 1005 4.7 21,260
Place(incorporated places and census designated places) 532 2.1 2,108 8.3 25,306
Alaska Native Regional Corporation 3 25 4 33.3 12
American Indian Area/Alaska Native Area/Hawaiian Home Land 14 2.1 35 5.3 655
Metropolitan Statistical /Micropolitan Statistical Area 512 53.7 926 97.2 953
Principal City of Metropolitan / Micropolitan Statistical Areas 371 28.6 787 60.8 1,295
Metropolitan Division 29 100 29 100 29
Combined Statistical Area 125 99.2 126 100 126
Combined New England City and Town Area 9 90 10 100 10
New England City and Town Area 25 58.1 40 93 43
Principal Cities of New England City and Town Areas 22 32.4 48 70.6 68
New England City and Town Area Division 9 100 9 100 9
Urban Area 395 10.9 855 23.6 3,625
Congressional Districts – 110th 435 100 435 100 435
Delegate District – 110th (at Large, District of Columbia)  1 100 1 100 1
Resident Commissioner District - 110th (at Large, Puerto Rico) 1 100 1 100 1
Public Use Microdata Area 2,099 99.9 2,101 100 2,101
School District (Elementary) 74 3.1 293 12.4 2,354
School District (Secondary) 93 18.1 216 42 514
State-School District (Unified) 794 7.2 2,848 26 10,957
TOTAL 6,599 9 13,830 18.9 73,040

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