What is the largest city in Aroostook County, ME?

Presque Isle is the largest city or town in Aroostook County, with about 8,736 residents.

How many ZIP codes are in Aroostook County?

Aroostook County includes 41 ZIP Code Tabulation Areas, including 04424, 04459, 04471, 04497, 04730.

What is the population of Aroostook County, ME?

About 67,058 people live in Aroostook County, based on American Community Survey 5-year estimates.

What counties border Aroostook County?

Aroostook County borders Penobscot County, Somerset County, Washington County, Piscataquis County.

Aroostook County, ME: Cities, ZIP Codes & Local Data

Population

67,058

Land area

6,671sq mi

People per sq mi

10

ZIP codes

41

Aroostook County at a glance

Aroostook County is 78% less dense than Maine as a whole.
By population, it ranks 6th among 16 counties in Maine.
The median household income is $56,700, 24% below the Maine median of $74,733.
A typical owner-occupied home is valued at $149,700 (50% below Maine) and median rent is $784 a month.
Its largest cities are Presque Isle (8,736), Caribou (7,382) and Houlton (5,082).

Local data for Aroostook County, ME

Counts from official public data

Housing and community stats

Aroostook County, ME, American Community Survey 2020-2024

Full profile

Median household income

$56,700

Poverty rate

14.4%

Median home value

$149,700

Prices +8.6% in a year

Median rent

$784/mo

Homeownership

74.5%

Bachelor's or higher

23.4%

Median age

48.3

Average commute

18.3 min

Largest reported origins and ancestries: French Americans (11,951), Irish Americans (8,858), German Americans (3,806).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.0%

Sep 2026, +0.2 pts in a year

Average annual pay

$53,513

25,657 jobs, 2025

Income per person

$58,192

BEA, 2024

Federal spending

$770M

FY 2026, $11,480 per person

PPP loans

$133M

2,809 loans, 18,585 jobs reported

Campaign donations

$178K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Aroostook County, ME, workers 16 and older. American Community Survey 5-year estimates

Drove alone77.8%
Carpooled9.6%
Public transit0.1%
Walked2.1%
Bicycle0.1%
Taxi, ride-hailing, motorcycle or other1.5%
Worked from home8.8%

Average one-way commute: 18.3 minutes for people who do not work from home.

Environment and hazard risk

Aroostook County, ME, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: winter weather

Storm events since 1996

1,940

Most often thunderstorm wind

Flood insurance policies

92

0.3% of homes, county

July high / Jan low

79° / 3°F

38.0 inches of rain a year

Hazards, floods and storm history Check a flood zone 52 historic places

Health statistics

Share of adults in Aroostook County, ME, CDC PLACES estimates

All 40 measures

Obesity

40.0%

U.S. 33.3% +6.7 pts

Diabetes

14.8%

U.S. 12.1% +2.7 pts

Smoking

17.9%

U.S. 12.8% +5.1 pts

Uninsured (18-64)

9.4%

U.S. 11.1% -1.7 pts

Cities, towns and ZIP codes in Aroostook County

Population shown

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Frequently asked questions

What is the largest city in Aroostook County, ME?: Presque Isle is the largest city or town in Aroostook County, with about 8,736 residents.
How many ZIP codes are in Aroostook County?: Aroostook County includes 41 ZIP Code Tabulation Areas, including 04424, 04459, 04471, 04497, 04730.
What is the population of Aroostook County, ME?: About 67,058 people live in Aroostook County, based on American Community Survey 5-year estimates.
What counties border Aroostook County?: Aroostook County borders Penobscot County, Somerset County, Washington County, Piscataquis County.