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 Economic Geographic Reference File (EGRF) The reference file of geographic entities for the 1992 economic census; replaces the EGIRT used in earlier economic censuses. See also Economic Geographic Information Reference Tape.

Economic subregion (ESR) A combination of two or more State economic areas into a larger, relatively homogeneous geographic unit. The subregions may cross State lines, but are intended to preserve the similar characteristics of the state economic areas used by the Census Bureau to report decennial census data from the 1950 through the 1980 censuses. See also State economic area.

ED See enumeration district.

ED number A one- to four-digit number, in some instances including an alphabetic suffix, that uniquely identified each enumeration district within a district office and county for the 1980 and earlier decennial and special censuses. See also enumeration district.

EGIRT See Economic Geographic Information Reference Tape.

EGRF See Economic Geographic Reference File.

Election district A nonfunctioning class of MCDs in Guam and Maryland.

Election precinct (EP) A nonfunctioning class of MCDs in Illinois and Nebraska that represent a voting area. In the 1980 census, the term used by the Census Bureau for a voting district. See also precinct, voting district.

Elementary school district A school district inclusive of kindergarten through either the eighth or ninth grade or the first through either the eighth or the ninth grade. For the data tabulations from the 1980 and 1990 decennial censuses, this term includes both elementary and intermediate/middle districts. See also independent district, intermediate/middle district, school district, secondary district. GlossaryG-21