Zip Code 03054 — Merrimack, NH

ZIP Code 03054 is associated with Merrimack, NH, in Hillsborough County. The listed population estimate is 28,176; estimated density is 334.0 people per square mile. Among records with population estimates, it ranks #6 of 34 in Hillsborough County and #10 of 245 in NH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.854710, -71.518780)

Data MetricLocal Statistic
Postal / Zip Code03054
Primary CityMerrimack
State / ProvinceNH
CountyHillsborough
Total Population28,176
Population Density334.0 people/sq mi
TimezoneAmerica/New_York

How 03054 Compares

MetricZIP 03054Hillsborough County recordsNH records
Population estimate28,176426,425 (sum)1,394,951 (sum)
Population Density334.0 /sq mi----
County population rank#6 of 34----
State population rank#10 of 245----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in NH

ZIP CodeCityDistancePopulation estimate
ZIP 03052Litchfield3.3 mi8,499
ZIP 03031Amherst4.6 mi11,849
ZIP 03063Nashua5.2 mi15,805
ZIP 03064Nashua5.7 mi14,391
ZIP 03110Bedford6.0 mi23,746

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →