. "PART I: Using the American Community Survey, 2 Essentials for Users." Using the American Community Survey: Benefits and Challenges. Washington, DC: The National Academies Press, 2007.
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Using the American Community Survey: Benefits and Challenges
TABLE 2-5 Major Types of Geographic Areas for Which 1-Year, 3-Year, and 5-Year Period Estimates Are Available from the American Community Survey
Area Type
Estimate Type
1-Year Period
3-Year Period
5-Year Period
States and District of Columbia
51
51
51
Congressional districts
436
436
436
Public use microdata areas (PUMAs) (these areas have at least 100,000 people)
2,071
2,071
2,071
Metropolitan and micropolitan statistical areas
492
905
936
Urban areas
363
809
3,607
Counties and county equivalents
775
1,812
3,141
Cities, towns, and census-designated places
492
2,062
25,112
Townships and villages (minor civil divisions) (recognized for publication in 28 states)
186
984
21,200
School districts (elementary, secondary, and unified)
878
3,257
14,394
American Indian and Alaska Native areas
14
36
603
Census tracts
0
0
65,433
Block groups
0
0
208,790
NOTES: 1-year period estimates are available for governmental and statistical areas with at least 65,000 people; 3-year period estimates are available for governmental and statistical areas with at least 20,000 people; 5-year period estimates are available for all governmental and statistical areas, including census tracts (statistical areas of about 4,000 people) and block groups (statistical areas of about 1,500 people). Other areas for which estimates are provided (not shown) include combined statistical areas, Hawaiian Home Lands, urban and rural territory, areas inside and outside the principal city of a metropolitan or micropolitan statistical area, areas outside metropolitan and micropolitan areas.
SOURCE: Tabulation provided by the U.S. Census Bureau, February 21, 2007. Because of changes in population and geographic boundaries, the actual numbers of areas with estimates published may differ from the numbers shown.
