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 ?
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. Outside USA, users can also use territories of UK, Canada, Australia, Mexico, and many others.
Population by 3-digit zip codes (zip sectional centers) was selected as the elemental customer cluster.
HIAA defines areas based on 3-digit ZIP Codes. These areas are defined so that each contains adequate numbers of claims so as to allow reliable estimates of mean and median charges to be derived for individual health care services.