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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Dover, NH

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Area Code(s):603
Timezone(s):Eastern (GMT -05:00)
City Population:29,987 (More Details)
CBSA:Boston-Cambridge-Newton, MA-NH
Congressional District(s):01
Land Area:369 square miles (county)
Water Area:15 square miles (county)

3 ZIP Codes

Dover, NH ZIP Code Boundaries

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Dover, NH Covers 3 ZIP Codes

ZIP CodeTypePopulation% of PopulationAliases
03821P.O. Box00.00%

Dover, NH Demographic Information *

Total population**29,987
Male population14,691
Female population15,296
Median age (years)36.7
White Population27,155
Black Population521
Indian Population59
Asian Population1,371
Hawaiian Population14
Hispanic Population660
Median age (Male)35.2
Median age (Female)38.2
Total households12,827
Family households (families)7,059
Average household size2.27
Average family size2.89
Total housing units13,685
* Demographic data is based on 2010 Census for the City of DOVER.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],