Plainfield is a town in Sullivan County, New Hampshire, home to about 2,522 people across 52 square miles. Its ZIP codes are 03770 and 03781.
Homes sold for a median of $270 per square foot across 2 ZIP codes in the three months ending August 2026, and 1 of 2 were seller’s markets.
All in Plainfield
Each card is that ZIP code’s whole market, including any part outside Plainfield. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Plainfield’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Albany International Airport (ALB)95 miles away |
|---|---|
| Closer regional airport | Lebanon Municipal Airport (LEB)6 miles away |
| Nearest city of 250,000+ | Boston, MA105 miles away |
| Nearest city of 1 million+ | New York, NY217 miles away |
Straight-line distances from the center of Plainfield; 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.
Plainfield had 2,459 residents in the 2020 census, up 10% since 2000.
It’s the 124th largest of 242 towns in New Hampshire by population.
Sullivan County grew from 18,009 residents in 1900 to 43,063 in 2020.
Sullivan County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 9°F. About 38 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Lebanon Muni Ap, NH weather station (6 miles away).
12,071 jobs at 956 businesses in Sullivan County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
6 doctors and other health care providers list an office in Plainfield’s ZIP codes.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 3 |
|---|---|
| Mental health providers | 2 |
| Physical and occupational therapists | 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 (2 nearby)
Grocery stores
Pharmacies
Libraries (2 nearby)
Museums
Theaters and performance venues
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.
Established in 1761.
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Plainfield School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Plainfield Elementary SchoolMeriden | K–8 | 183 | Public | 0.6 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Estabrook Christian SchoolPlainfield | K–8 | 11 | Seventh-day Adventist | 4.3 mi |
| Kimball Union AcademyMeriden | 9–12 | 338 | Nonsectarian | 0.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private 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.