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How was the Census Bureaus Address List created and how is it maintained?

April 26, 2017address census list maintained

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How was the Census Bureaus Address List created and how is it maintained?

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In preparation for Census 2000, the Census Bureau created the Master Address File (MAF) by merging the 1990 Address Control File with the latest version of the U.S. Postal Service’s (USPS) Delivery Sequence File (DSF). The Census Bureau’s Geography Division regularly updates the MAF database from various sources. In addition to the USPS DSF, other sources of updates include current household surveys, special censuses, and local sources.