Islesboro is a town in Waldo County, Maine, home to about 636 people across 14 square miles. Its ZIP code is 04848.
Homes sold for a median of $347 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Islesboro. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Islesboro’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)83 miles away |
|---|---|
| Closer regional airport | Knox County Regional Airport (RKD)20 miles away |
| Nearest city of 250,000+ | Boston, MA173 miles away |
| Nearest city of 1 million+ | New York, NY359 miles away |
Straight-line distances from the center of Islesboro; 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.
Islesboro had 583 residents in the 2020 census, down 3% since 2000.
It’s the 343rd largest of 519 towns in Maine by population.
Waldo County grew from 24,185 residents in 1900 to 39,607 in 2020.
Waldo County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 77°F in summer, and winter lows average 10°F. About 49 inches of rain and melted snow fall in a typical year, with about 72 inches of snow.
Source: NOAA 1991–2020 climate normals, Belfast, ME weather station (7 miles away).
9,273 jobs at 1,003 businesses in Waldo County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
11 doctors and other health care providers list an office in Islesboro.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 7 |
|---|---|
| Mental health providers | 3 |
| 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.
Museums (3 nearby)
Theaters and performance venues
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.
Public schools here are run by Islesboro Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Islesboro Central SchoolIslesboro | K–12 | 64 | Public | 2.8 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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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.