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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Merrimack, NH

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Area Code(s):603
Timezone(s):Eastern (GMT -05:00)
City Population:25,477 (More Details)
CBSA:Manchester-Nashua, NH
Congressional District(s):01, 02
Land Area:876 square miles (county)
Water Area:16 square miles (county)

1 ZIP Code

Merrimack, NH ZIP Code Boundaries

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Merrimack, NH Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Merrimack, NH Demographic Information *

There is no Census data for the city of MERRIMACK, NH. We have pulled information for the ZIP Code 03054 instead.
Total population**25,477
Male population12,679
Female population12,798
Median age (years)40.7
White Population24,213
Black Population192
Indian Population46
Asian Population499
Hawaiian Population4
Hispanic Population546
Median age (Male)40
Median age (Female)41.4
Total households9,496
Family households (families)7,144
Average household size2.67
Average family size3.07
Total housing units9,807
* Demographic data is based on 2010 Census for the City of MERRIMACK.
** 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],