Thomaston is a town in Knox County, Maine, home to about 2,769 people across 11 square miles. Its ZIP code is 04861.
Homes sold for a median of $237 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Thomaston. 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)63 miles away |
|---|---|
| Closer regional airport | Knox County Regional Airport (RKD)5 miles away |
| Nearest city of 250,000+ | Boston, MA152 miles away |
| Nearest city of 1 million+ | New York, NY338 miles away |
Straight-line distances from the center of Thomaston; 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.
Thomaston had 2,739 residents in the 2020 census, down 27% since 2000.
It’s the 133rd largest of 519 towns in Maine by population.
Knox County grew from 30,406 residents in 1900 to 40,607 in 2020.
Knox County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 74°F in summer, and winter lows average 17°F. About 47.6 inches of rain and melted snow fall in a typical year, with about 53 inches of snow.
Source: NOAA 1991–2020 climate normals, Tenants Harbor, ME weather station (7 miles away).
14,502 jobs at 1,823 businesses in Knox 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 Thomaston.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 4 |
| Mental health providers | 2 |
| Chiropractors | 1 |
| Pharmacies | 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 (6 nearby)
Grocery stores
Libraries (2 nearby)
Museums (2 nearby)
Counts are within about 2.5 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.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Rsu 13. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Thomaston Grammar SchoolThomaston | Pre-K–5 | 164 | Public | 0.3 mi |
| Oceanside Middle SchoolThomaston | 6–8 | 307 | Public | 0.2 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.