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20191 ZIP Code - United States

This ZIP Code belongs to the following areas. Below you can see the map of the postal area.

City City ZIP Type Estimated Population
Reston, VA PRIMARY Significado STANDARD 24.549
Herndon, VA ACCEPTABLE Significado STANDARD 24.549

Postal Zone from ZIP Code 20191 - United States

20191 ZIP Code - United States
ZIP Code Tabulation Areas (ZCTAs) for 20191 ZIP Code. A ZCTA is a generalized area representation of the american ZIP Code service area.

20191 details

City Reston
County Fairfax
State Virginia
Estimated Population 30.181
Density 1.416,00
Timezone America/New_York
Latitude 38.933820000
Longitude -77.350840000

Average county area weight on ZIP Code 20191

County FIP Weight
Fairfax 51059 100%

ZIP Code Virginia

Check the list of Virginia ZIP Code.

United States ZIP Code

See all the USA ZIP Code.

Status Definitions
  • PRIMARY: means an the primary city name. Official city name, although the city name might also have another acceptable name.
  • ACCEPTABLE: means an adequate city name. City names that are abbreviated will frequently be listed as unacceptable because abbreviations are not an acceptable city name format.
  • NOT ACCEPTABLE: Means an inadequate city name has been entered or received based on information entered.
  • UNIQUE: Assigned to a company, government agency, or entity with sufficient mail volume, based on average daily volume of letter size mail received, availability of ZIP Code numbers in the postal area, and the US mail service cost-benefit analysis.