American Community Survey (ACS)

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Revised Estimates for Census 2000 Supplementary Survey and the 2000 American Community Survey

Limitations of C2SS Data

Differences Between the C2SS and the 1990 Census

Revised Estimates for Census 2000 Supplementary Survey and the 2000 American Community Survey

The American Community Survey is continuously introducing methodological improvements to maximize the quality of the estimates. Based on results from the survey evaluation program we continue to make changes and improve the estimation methodology. The difference in the estimates from previous releases is a result of revised edits, and reweighting the data using an improved estimation methodology.

The 109 core tables have been corrected for the Census 2000 Supplementary Survey (November 7, 2002) and the 2000 American Community Survey (November 22, 2002) and only the corrected versions of these tables are available. Over the next few months, the noncore tables will be updated as well, but until then there may be inconsistencies within the Census 2000 Supplementary Survey data and the 2000 American Community Survey data.

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