Town · Maine
Grand Isle, Maine
Grand Isle, town, in Aroostook County, Maine. Grand Isle had 356 residents on July 1, 2025 by the Census Bureau's estimate, down 1.1% since 2020; the 2020 Census counted 366 and the ACS 2020-2024 5-year estimates put it at 407 (±95). GEOID 2300328590.
Residents, July 2025 estimate
356
Census Bureau estimate (no margin published)
2020 Census count: 366 · ACS 2020-2024: 407 ±95
Median household income
$35,417
±$11,146 (90% margin)
Maine: $74,733
Median home value
$85,000
±$14,743 (90% margin)
Maine: $296,600
Median gross rent
$794
±$312 (90% margin)
Maine: $1,139
Where is Grand Isle and what county is it in?
Grand Isle is a town in Aroostook County, Maine. It covers 34.6 square miles of land, 11 residents per square mile in 2020.
One place lies inside Grand Isle: Grand Isle (CDP, 184 in 2020).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Grand Isle, and is it growing?
The Census Bureau estimates that 356 people lived in Grand Isle on July 1, 2025, down 1.1% since 2020, while Maine grew 3.8%. The 2020 Census counted 366 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 407 (±95).
| Measure | Grand Isle | Aroostook County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 407±95 | 67,058 | no clear change |
| Households | 223±52 | 29,932 | no clear change |
| Average household size | 1.83±0.32 | 2.18 | no clear change |
| Housing units | 255±57 | 38,450 | no clear change |
Grand Isle's population since 2000
From 518 in 2000 to 356 in 2025: down 31.3%. The 2000, 2010 and 2020 figures are census counts, each for Grand Isle as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Grand Isle?
The median resident of Grand Isle is 60.3 years old. The largest group is non-Hispanic white residents at 99.5%, then non-Hispanic American Indian and Alaska Native residents at 0.5%. 9.1% of residents were born outside the United States.
| Measure | Grand Isle | Aroostook County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 60.3±8.6 | 48.3 | no clear change |
| Under 18 years | 10.6%±7.3 pts | 18.7% | – |
| 65 years and over | 33.4%±11.3 pts | 25.7% | – |
| Male | 48.6%±7.8 pts | 50.0% | – |
| Hispanic or Latino (any race) | 0.0%±6.5 pts | 1.7% | – |
| White alone, not Hispanic | 99.5%±0.9 pts | 92.5% | no clear change |
| Black or African American alone, not Hispanic | 0.0%±6.5 pts | 0.7% | – |
| Asian alone, not Hispanic | 0.0%±6.5 pts | 0.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.5%±0.9 pts | 1.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±6.5 pts | 0.1% | – |
| Two or more races, not Hispanic | 0.0%±6.5 pts | 3.3% | – |
| Some other race alone, not Hispanic | 0.0%±6.5 pts | 0.1% | – |
| Born outside the United States | 9.1%±5.8 pts | 4.1% | no clear change |
| Speak a language other than English at home (age 5+) | 57.9%±14.7 pts | 14.0% | – |
| Civilian veterans (age 18+) | 10.2%±4.5 pts | 10.0% | – |
| With a disability | 26.5%±9.0 pts | 20.6% | – |
| No health insurance coverage | 9.8%±9.9 pts | 8.0% | – |
| High school graduate or higher (age 25+) | 93.9%±5.2 pts | 91.1% | – |
| Bachelor's degree or higher (age 25+) | 13.5%±8.0 pts | 23.4% | no clear change |
| Graduate or professional degree (age 25+) | 0.9%±1.3 pts | 7.4% | – |
| Lived in the same house a year earlier | 96.1%±3.1 pts | 90.1% | – |
| Moved from another state in the past year | 0.7%±1.0 pts | 1.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Grand Isle earn?
Half of Grand Isle's 223 households earn less than $35,417 a year (±$11,146), against $56,700 in Aroostook County and $74,733 in Maine. In 2015-2019 it was $34,421 in 2024 dollars; the margins of error cannot tell the two periods apart. 20.9% of residents live below the poverty line.
| Measure | Grand Isle | Aroostook County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $35,417±$11,146 | $56,700 | no clear change |
| Mean household income | $57,094±$12,115 | $77,175 | – |
| Per capita income | $32,407±$6,011 | $34,879 | +$7,952 |
| People below the poverty line | 20.9%±8.6 pts | 14.4% | no clear change |
| Children under 18 below the poverty line | 25.6%±31.2 pts | 16.4% | – |
| Households receiving SNAP | 29.1%±12.3 pts | 20.7% | – |
| Households with a computer | 82.5%±9.6 pts | 91.0% | – |
| Households with a broadband subscription | 79.4%±10.3 pts | 84.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Grand Isle?
Owners occupy 71.3% of Grand Isle's occupied homes and renters 28.7%. The median owner-occupied home is valued at $85,000 by its owner (±$14,743). The median renter pays $794 a month including utilities, and 56.6% of renters pay 35% or more of their income on rent.
| Measure | Grand Isle | Aroostook County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $85,000±$14,743 | $149,700 | +$16,820 |
| Median gross rent | $794±$312 | $784 | no clear change |
| Renters paying 35% or more of income on rent | 56.6%±34.3 pts | 35.4% | no clear change |
| Median monthly owner costs, with a mortgage | $1,163±$228 | $1,196 | – |
| Owner-occupied homes | 71.3%±13.9 pts | 74.5% | no clear change |
| Renter-occupied homes | 28.7%±13.9 pts | 25.5% | – |
| Housing units | 255±57 | 38,450 | no clear change |
| Homeowner vacancy rate | 0.0%±15.8 pts | 1.1% | – |
| Rental vacancy rate | 0.0%±33.3 pts | 6.1% | – |
| Single-family detached homes | 80.4%±8.4 pts | 73.4% | – |
| Mobile homes | 8.2%±5.5 pts | 9.2% | – |
| Built 2020 or later | 0.0%±10.2 pts | 0.8% | – |
| Built 2010 to 2019 | 0.8%±1.4 pts | 4.5% | – |
| Built 1939 or earlier | 24.7%±10.7 pts | 19.9% | – |
| Households with no vehicle | 9.4%±8.9 pts | 8.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Grand Isle work and get to work?
93.6% of Grand Isle's workers drive alone. The average trip to work takes 22.7 minutes.
| Measure | Grand Isle | Aroostook County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 40.1%±10.0 pts | 54.7% | – |
| Unemployment rate | 13.0%±14.5 pts | 5.3% | – |
| Drove alone to work | 93.6%±7.3 pts | 77.8% | – |
| Carpooled | 5.6%±7.3 pts | 9.6% | – |
| Public transportation | 0.0%±19.6 pts | 0.1% | – |
| Walked | 0.0%±19.6 pts | 2.1% | – |
| Worked from home | 0.8%±2.8 pts | 8.8% | – |
| Mean travel time to work | 22.7 min±3.8 | 18.3 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Grand Isle?
No census tract lies mostly in Grand Isle; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9502Aroostook County | 2,265 | $39,531 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Grand Isle) · Census block assignment files
How does Grand Isle compare with other places in Maine?
By the Census Bureau's July 2025 estimates, Grand Isle is the 11,029th-most populous of the 16,079 U.S. towns and townships that have one and the 362nd-most populous of 454 in Maine.
Grand Isle is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 362nd | 454 |
Grand Isle's figures with every place in Maine (CSV)
Every place in Maine, sortable · Compare Grand Isle with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Grand Isle?
23 of the 57 figures for Grand Isle on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Grand Isle are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.