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 this format was expanded to include all urban cores for the 1980 census by converting the ACGs in a program called the ACG Improvement Program. Each file contained the name of each segment of a mapped feature, its associated address range and ZIP Code if applicable, 1980 census geographic area information for both sides of each segment, node numbers that identified feature intersections and selected points of a curved line, and x,y coordinate information for each node in the file. The file contained information describing the street network in the major urban centers, and was used to build the TIGER data base. See also Address Coding Guide, geographic base file, TIGER data base, TIGER System.

General delivery address A type of postal delivery service offered at post offices without carrier delivery service for customers who do not want a post office box, and at any post office to serve transients and customers who are not permanently located. See also address, city-style address, post office box address, rural address.

General-purpose government A functioning governmental unit that, through appointed or elected officials, performs many tasks and provides a wide range of services. See also governmental unit.

Geocode A code assigned to identify a geographic entity; to assign an address (such as housing unit, business, industry, farm) to the full set of geographic code(s) applicable to the location of that address on the surface of the Earth. See also Address Coding Guide, GBF/DIME-File, geographic base file, geographic code, TIGER data base, TIGER System.

Geographic Areas Reference Manual (GARM) A geographic reference source developed by the Census Bureau as a guide for local CSACs and other agencies and groups working with the Census Bureau to maintain and improve the geographic areas, concepts, and methods used for the presentation of decennial and economic census data. See also census statistical areas committees, census tract manual. GlossaryG-25