The Census Bureau is moving forward with plans for the 2030 census, despite an ongoing lawsuit over the 2020 census. The lawsuit, filed by America First Legal, alleges that the Census Bureau’s use of differential privacy and group quarters imputation unconstitutionally manipulated population data, potentially costing Florida two congressional seats.

Census Methodology Under Scrutiny

The Census Bureau’s use of differential privacy, a statistical technique that adds random noise to census data, has been criticized by some as distorting population data. However, researchers have found that the technique had a minimal impact on the overall accuracy of the census data. The bureau is now researching improvements and alternatives to the disclosure avoidance methods used in 2020.

A federal lawsuit filed by America First Legal challenges the Census Bureau’s use of differential privacy and group quarters imputation. The lawsuit alleges that these methods unconstitutionally manipulated population data, potentially costing Florida two congressional seats. However, researchers have found that removing the imputed population would not have changed congressional apportionment in any state.

Implications for 2030 Census

The methodology decisions being made now will have consequences beyond the privacy debate. The Census Bureau’s ongoing efforts to replace the American Community Survey with fully synthetic data pose a bigger threat to data quality than anything differential privacy introduced. The bureau is planning to test a final design in a 2028 dress rehearsal before peak production begins in 2029.

Original reporting: KTBS 3 (Shreveport) — read the source article.