Home > NH > Belknap County > Barnstead > Zip 03218

Zip Code 03218 — Barnstead, NH

03218 is a ZIP Code associated with Barnstead, NH, located within Belknap. 03218 ranks #12 out of 13 ZIP codes in Belknap County by population (and #186 out of 247 in NH). The area supports an estimated population of 1,160 residents across Data Pending housing units, with a population density of 29.3 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.334650, -71.288030)

Data Metric	Local Statistic
Postal / Zip Code	03218
Primary City	Barnstead
State / Province	NH
County	Belknap
Total Population	1,160
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	29.3 people/sq mi
Timezone	America/New_York

How 03218 Compares

Metric	ZIP 03218	Belknap County	NH State Average
Population	1,160	60,615 (Total)	1,394,951 (Total)
Average ZIP Income	Data Pending	N/A	N/A
Population Density	29.3 /sq mi	--	--
County Pop Rank	#12 of 13	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 03263	Pittsfield	3.0 mi	4,105	N/A
Zip 03225	Center Barnstead	3.1 mi	3,834	N/A
Zip 03837	Gilmanton Iron Works	6.4 mi	1,451	N/A
Zip 03258	Chichester	7.7 mi	2,721	N/A
Zip 03307	Loudon	7.8 mi	5,724	N/A

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 →