Zip Code 03218 — Barnstead, NH

ZIP Code 03218 is associated with Barnstead, NH, in Belknap County. The listed population estimate is 1,160; estimated density is 29.3 people per square mile. Among records with population estimates, it ranks #12 of 13 in Belknap County and #186 of 245 in NH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (43.334650, -71.288030)

Data MetricLocal Statistic
Postal / Zip Code03218
Primary CityBarnstead
State / ProvinceNH
CountyBelknap
Total Population1,160
Population Density29.3 people/sq mi
TimezoneAmerica/New_York

How 03218 Compares

MetricZIP 03218Belknap County recordsNH records
Population estimate1,16060,615 (sum)1,394,951 (sum)
Population Density29.3 /sq mi----
County population rank#12 of 13----
State population rank#186 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 03263Pittsfield3.0 mi4,105
ZIP 03225Center Barnstead3.1 mi3,834
ZIP 03837Gilmanton Iron Works6.4 mi1,451
ZIP 03258Chichester7.7 mi2,721
ZIP 03307Loudon7.8 mi5,724

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 →