A new analysis of 2010 Census participation rates finds that 22% of counties have exceeded their Census 2000 participation rates by at least five percentage points. As of April 20, so had two states–North Carolina and South Carolina.

The analysis by the Center for Urban Research at the Graduate Center of the City University of New York also found that nine census tracts nationwide had 100% mail participation rates. That means all households that received census forms in those tracts (each of which have about 4,000 residents) mailed them back. Nationally as of April 20, 71% of households turned in their forms.