Gilmanton is a town in Belknap County, New Hampshire, home to about 4,026 people across 58 square miles. Its ZIP codes are 03237 and 03837.
Homes sold for a median of $281 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
Each card is that ZIP code’s whole market, including any part outside Gilmanton. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Gilmanton’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Portland International Jetport (PWM)55 miles away |
|---|---|
| Closer regional airport | Manchester-Boston Regional Airport (MHT)34 miles away |
| Nearest city of 250,000+ | Boston, MA78 miles away |
| Nearest city of 1 million+ | New York, NY232 miles away |
Straight-line distances from the center of Gilmanton; 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.
Gilmanton had 3,945 residents in the 2020 census, up 29% since 2000.
It’s the 98th largest of 242 towns in New Hampshire by population.
Belknap County grew from 19,526 residents in 1900 to 63,705 in 2020.
Belknap County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 82°F in summer, and winter lows average 12°F. About 45.7 inches of rain and melted snow fall in a typical year, with about 62 inches of snow.
Source: NOAA 1991–2020 climate normals, Lakeport 2, NH weather station (10 miles away).
21,197 jobs at 1,905 businesses in Belknap County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
8 doctors and other health care providers list an office in Gilmanton’s ZIP codes.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 1 |
|---|---|
| Mental health providers | 2 |
| Physical and occupational therapists | 4 |
| Chiropractors | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (3 nearby)
Grocery stores
Pharmacies
Libraries (3 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 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.
Public schools here are run by Gilmanton School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Gilmanton Elementary SchoolGilmanton IW | K–8 | 335 | Public | 2.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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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.