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Niwot, Colorado ZIP Code - United States

The location Niwot, CO has 3 differents ZIP Codes. Check the map below to check your ZIP Code.

City Name ZIP Code ZIP Type Estimated Population
Niwot, CO ACCEPTABLE Status defition 80503 STANDARD 26.346
Niwot, CO ACCEPTABLE Status defition 80504 STANDARD 20.307
Niwot, CO PRIMARY Status defition 80544 PO BOX 566

Postal Zone of Niwot, CO - USA

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

Niwot, CO belongs to which county?

Niwot, CO belongs to Boulder county. Check the list of Boulder county ZIP Code.

ZIP Code Colorado

Check the list of Colorado ZIP Code.

ZIP Code United States

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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.
  • IMPROPER/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.