Zip Code 03865 — Plaistow, NH

ZIP Code 03865 is associated with Plaistow, NH, in Rockingham County. The listed population estimate is 7,861; estimated density is 286.6 people per square mile. Among records with population estimates, it ranks #11 of 35 in Rockingham County and #48 of 245 in NH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.840320, -71.096030)

Data MetricLocal Statistic
Postal / Zip Code03865
Primary CityPlaistow
State / ProvinceNH
CountyRockingham
Total Population7,861
Population Density286.6 people/sq mi
TimezoneAmerica/New_York

How 03865 Compares

MetricZIP 03865Rockingham County recordsNH records
Population estimate7,861319,082 (sum)1,394,951 (sum)
Population Density286.6 /sq mi----
County population rank#11 of 35----
State population rank#48 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 03811Atkinson3.3 mi7,267
ZIP 03858Newton3.3 mi4,836
ZIP 03826East Hampstead3.7 mi2,654
ZIP 03841Hampstead5.1 mi6,508
ZIP 03848Kingston5.4 mi6,275

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 →