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Change to Estimation of Percentile Limits in Table B19080 in the 2010 ACS
Beginning with the 2010 ACS 1-year estimates, the Census Bureau changed the way it estimated income percentile limits in the creation of table B19080, switching from reported values to interpolated values.
In some areas, this change had a significant effect on income percentile limits of $250,000 or more. For instance, in the 2009 ACS 1-year estimates for New York County, NY, the published "Lower Limit of Top 5 Percent" of households was $448,387. In the 2010 ACS 1-year estimates, the same estimate was capped at $250,000 (published as "$250,000+").
This change was made to protect respondent confidentiality. The new method was also used in the creation of the 2008-2010 3-year estimates and the 2006-2010 5-year estimates, and will be used in subsequent ACS data releases.
Page Last Revised - October 8, 2021
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