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21104 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
Marriottsville, MD PRIMARY Significado STANDARD 4.406
Marriottsvl, MD ACCEPTABLE Significado STANDARD 4.406
Woodstock, MD ACCEPTABLE Significado STANDARD 4.406
Henryton, MD NOT ACCEPTABLE Significado STANDARD 4.406

Postal Zone from ZIP Code 21104 - United States

21104 ZIP Code - United States
ZIP Code Tabulation Areas (ZCTAs) for 21104 ZIP Code. A ZCTA is a generalized area representation of the american ZIP Code service area.

21104 details

City Marriottsville
County Carroll, Howard, Baltimore
State Maryland
Estimated Population 5.762
Density 131,00
Timezone America/New_York
Latitude 39.349620000
Longitude -76.906520000

Average county area weight on ZIP Code 21104

County FIP Weight
Carroll 24013 54.88%
Howard 24027 41.86%
Baltimore 24005 3.26%

ZIP Code Maryland

Check the list of Maryland 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.