Long Island is a town in Cumberland County, Maine, home to about 249 people across 1.4 square miles. Its ZIP code is 04050.
Homes sold for a median of $472 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 Long Island. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Long Island’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)8 miles away |
|---|---|
| Nearest city of 250,000+ | Boston, MA103 miles away |
| Nearest city of 1 million+ | New York, NY285 miles away |
Straight-line distances from the center of Long Island; 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.
Long Island had 234 residents in the 2020 census, up 16% since 2000.
It’s the 428th largest of 519 towns in Maine by population.
Cumberland County grew from 100,689 residents in 1900 to 303,069 in 2020.
Cumberland 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 16°F. About 48.3 inches of rain and melted snow fall in a typical year, with about 69 inches of snow.
Source: NOAA 1991–2020 climate normals, Portland Intl Jetport, ME weather station (8 miles away).
190,022 jobs at 12,242 businesses in Cumberland County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1 mile 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 Long Island Public Schools. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Long Island Elementary SchoolLong Island | K–5 | 8 | Public | 0.6 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.