Zip Code 03240 — Grafton, NH
03240 is a ZIP Code associated with Grafton, NH, located within Grafton. 03240 ranks #21 out of 36 ZIP codes in Grafton County by population (and #180 out of 247 in NH). The area supports an estimated population of 1,354 residents across Data Pending housing units, with a population density of 12.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (43.575990, -71.972210)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 03240 |
| Primary City | Grafton |
| State / Province | NH |
| County | Grafton |
| Total Population | 1,354 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 12.6 people/sq mi |
| Timezone | America/New_York |
How 03240 Compares
| Metric | ZIP 03240 | Grafton County | NH State Average |
|---|
| Population | 1,354 | 92,200 (Total) | 1,394,951 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 12.6 /sq mi | -- | -- |
| County Pop Rank | #21 of 36 | -- | -- |
Nearby ZIP Codes
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 →