Grafton is a town in Grafton County, New Hampshire, home to about 1,354 people across 41 square miles. Its ZIP code is 03240.
Homes sold for a median of $223 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Grafton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Portland International Jetport (PWM)83 miles away |
|---|---|
| Closer regional airport | Lebanon Municipal Airport (LEB)17 miles away |
| Nearest city of 250,000+ | Boston, MA98 miles away |
| Nearest city of 1 million+ | New York, NY225 miles away |
Straight-line distances from the center of Grafton; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Grafton had 1,385 residents in the 2020 census, up 22% since 2000.
It’s the 171st largest of 242 towns in New Hampshire by population.
Grafton County grew from 40,844 residents in 1900 to 91,118 in 2020.
Grafton County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 80°F in summer, and winter lows average 7°F. About 40.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Grafton, NH weather station (about a mile away).
54,232 jobs at 2,920 businesses in Grafton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
Libraries (1 nearby)
Museums
Counts are within about 4.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.