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Data Services Knowledge Base

Q:  

Is the Master Address File that the Census Bureau uses for data collection public use or not?

A:  

The Master Address File or MAF is the Census Bureau's official inventory of known living quarters and selected nonresidential units in the United States. The file contains mailing and location address information , geocodes, and other attribute information about each living quarters. The Census Bureau continues to update the MAF using the United States Postal Service Delivery Sequence File and various automated, computer assisted, clerical, and field operations. The sample for the American Community Survey is drawn from the MAF. The MAF is a confidential file protected by the Title 13 and is not accessible to the public.

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