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How the 2010 Census Is Different

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The 2010 Census will enumerate the resident population of the United States as of April 1, 2010. The census will include everyone living in the 50 states, the District of Columbia, Puerto Rico, the U.

How the American Community Survey Works

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(April 2009) The American Community Survey (ACS) samples nearly 3 million addresses each year, resulting in nearly 2 million final interviews. The annual ACS sample is much smaller than that of the Census 2000 long-form sample, which included about 18 million housing units.