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Topics
Data & Maps
Surveys & Programs
Resource Library
2011
Details About the 2011 Release
2011 New & Notable
Learn more about items of interest related to the 2011 ACS release.
2011 Release Schedule
Review the dates and components of the 2011 ACS release.
Table
Table & Geography Changes
Explanation of changes in the universe of geographic entities, changes to GEOID codes, and comparability changes.
Geographic Notes
- The 2007-2011 ACS 5-year data release marks the first time estimates for ZIP Code Tabulation Areas (ZCTAs) are available. Learn how ZCTAs are different from ZIP Codes.
- ACS Estimates for Urban Areas and PUMAs continue to use Census 2000 definitions. These geographies will use 2010 Census definitions in the 2012 ACS data release planned for 2013.
Page Last Revised - October 8, 2021
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