Jefferson is a town in Coos County, New Hampshire, home to about 1,013 people across 50 square miles. Its ZIP code is 03583.
Homes sold for a median of $196 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Jefferson; also Kilkenny
Each card is that ZIP code’s whole market, including any part outside Jefferson. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Jefferson’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)77 miles away |
|---|---|
| Closer regional airport | Lebanon Municipal Airport (LEB)68 miles away |
| Nearest city of 250,000+ | Boston, MA144 miles away |
| Nearest city of 1 million+ | New York, NY287 miles away |
Straight-line distances from the center of Jefferson; 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.
Jefferson had 1,043 residents in the 2020 census, up 4% since 2000.
It’s the 185th largest of 242 towns in New Hampshire by population.
Coos County grew from 29,468 residents in 1900 to 31,268 in 2020.
Coos County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 78°F in summer, and winter lows average 7°F. About 41.2 inches of rain and melted snow fall in a typical year, with about 95 inches of snow.
Source: NOAA 1991–2020 climate normals, Jefferson, NH weather station (3 miles away).
8,380 jobs at 809 businesses in Coos County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
5 doctors and other health care providers list an office in Jefferson.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Physical and occupational therapists | 2 |
| 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.
Grocery stores
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
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.
Public schools here are run by Heartwood Public Charter School. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Heartwood Public Charter SchoolJefferson | K–8 | 89 | Charter | 0.8 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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Shares ZIP codes with Kilkenny.
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.