Three-Digit Zip Code

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Three-Digit Zip Code

A prefix in a zip code representing a general geographic area. An area denoted by a three-digit zip code is serviced by a single postal facility (though a post office may have more than one three-digit code assigned to it).
References in periodicals archive ?
The geographically proximate firms are those located in the same 3-digit zip code as firm i.
Private insurance fees for the 84 selected physician services were obtained from the PHCS 1990 national data base that, as noted, reports fees for 3-digit ZIP Code areas.
Nationally, there are 770 3-digit ZIP Code areas, compared with more than 3,000 counties.
Some of the most popular territories that companies use are:US States, zip codes by State, counties by State, PUMA territories, and 3-digit zip codes.