Zip Code 03873 — Sandown, NH

ZIP Code 03873 is associated with Sandown, NH, in Rockingham County. The listed population estimate is 6,628; estimated density is 183.6 people per square mile. Among records with population estimates, it ranks #15 of 35 in Rockingham County and #59 of 245 in NH.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.933210, -71.183300)

Data MetricLocal Statistic
Postal / Zip Code03873
Primary CitySandown
State / ProvinceNH
CountyRockingham
Total Population6,628
Population Density183.6 people/sq mi
TimezoneAmerica/New_York

How 03873 Compares

MetricZIP 03873Rockingham County recordsNH records
Population estimate6,628319,082 (sum)1,394,951 (sum)
Population Density183.6 /sq mi----
County population rank#15 of 35----
State population rank#59 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 03819Danville3.1 mi4,471
ZIP 03841Hampstead3.6 mi6,508
ZIP 03826East Hampstead4.1 mi2,654
ZIP 03036Chester4.1 mi5,300
ZIP 03044Fremont4.9 mi4,831

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 →