City Reference File A file from the Economic and Agriculture Census that links the ZIP Codes and post office name information to the geographic entities and their associated codes used in that census (MAs, counties, and places, including incorporated places with more than 2,500 people, and selected MCDs referred to as special economic urban areas, or SEUAs).
City-style address An address consisting of a structure number and street name; for example, 201 Main St. See also address, general delivery address, post office box address, rural address.
Ciudad A term used by the government of Puerto Rico before the 1990 census to refer to a group of barrios (if they contained at least 50,000 people) that identified the municipio’s center of government. See also barrio.
Civil township A type of MCD with a functioning government. See also county subdivision, functioning government, minor civil division.
CMSA See consolidated metropolitan statistical area.
Code The alphanumeric characters assigned to identify a geographic entity (geocode) or a class of population, industries, and occupations, for ease in computer processing, such as a county code, an industry code, an occupational code, a place size code, or an income level; to assign data on a questionnaire to one or more classes of some sort, the entities of which are identified through the use of codes. See also Federal Information Processing Standards, geocode, geographic code, geographic hierarchy, Geographic Identification Code Scheme.
Coextensive Descriptive of two or more geographic entities that cover the same area, with their boundaries coincident.
Coextensive place A place that covers exactly the same area and has the same boundaries as its county subdivision or county.
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