Charleston is a town in Penobscot County, Maine, home to about 1,117 people across 41 square miles. Its ZIP code is 04422.
Homes sold for a median of $178 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 Charleston. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Charleston’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)115 miles away |
|---|---|
| Closer regional airport | Bangor International Airport (BGR)22 miles away |
| Nearest city of 250,000+ | Boston, MA212 miles away |
| Nearest city of 1 million+ | New York, NY391 miles away |
Straight-line distances from the center of Charleston; 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.
Charleston had 1,551 residents in the 2020 census, up 11% since 2000.
It’s the 262nd largest of 519 towns in Maine by population.
Penobscot County grew from 76,246 residents in 1900 to 152,199 in 2020.
Penobscot 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 3°F. About 44.9 inches of rain and melted snow fall in a typical year, with about 77 inches of snow.
Source: NOAA 1991–2020 climate normals, Dover-Foxcroft Wwtp, ME weather station (10 miles away).
60,749 jobs at 4,222 businesses in Penobscot 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 Charleston.
Nearest hospitals
Providers with an office here
| Mental health providers | 4 |
|---|---|
| Physical and occupational therapists | 2 |
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.
Libraries
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.
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Highview Christian AcademyCharleston | Pre-K–11 | 54 | Christian (no specific denomination) | 3.4 mi |
Source: U.S. Department of Education, NCES: Common Core of Data 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.