Carroll is a plantation in Penobscot County, Maine, home to about 134 people across 44 square miles. It has no ZIP code of its own: it’s part of 04487.
Homes sold for a median of $141 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Springfield; part is in Carroll
Each card is that ZIP code’s whole market, including any part outside Carroll. 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)164 miles away |
|---|---|
| Closer regional airport | Bangor International Airport (BGR)55 miles away |
| Nearest city of 250,000+ | Boston, MA258 miles away |
| Nearest city of 1 million+ | New York, NY441 miles away |
Straight-line distances from the center of Carroll; 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.
Carroll had 138 residents in the 2020 census, down 4% since 2000.
It’s the 464th 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 78°F in summer, and winter lows average 7°F. About 51.9 inches of rain and melted snow fall in a typical year, with about 115 inches of snow.
Source: NOAA 1991–2020 climate normals, Topsfield 2, ME weather station (19 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).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Parks (1 nearby)
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.
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Shares ZIP codes with Springfield, Prentiss UT, Lakeville, Webster and Whitney UT.
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.