Analytical data report #15 is the latest in a series of bulletins designed to complement our traditional data releases. The American Community Survey (ACS) is a continuous household survey conducted by the United States Census Bureau that will replace the long-form of the traditional decennial Census. ADR #15 provides background information on the ACS and the benefits and challenges associated with its use. The report also reviews some of the estimates currently available for the region's nine counties and six largest municipalities and, based on this data, discusses demographic changes in the Delaware Valley between 2000 and 2006
