Township · Minnesota
Island Lake Township, Mahnomen County, Minnesota
Island Lake Township, Mahnomen County, township, in Mahnomen County, Minnesota. Island Lake Township, Mahnomen County had 300 residents on July 1, 2025 by the Census Bureau's estimate, down 4.5% since 2020; the 2020 Census counted 300 and the ACS 2020-2024 5-year estimates put it at 358 (±56). GEOID 2708731418.
Residents, July 2025 estimate
300
Census Bureau estimate (no margin published)
2020 Census count: 300 · ACS 2020-2024: 358 ±56
Median household income
$73,750
±$35,242 (90% margin)
Minnesota: $89,062
Median home value
$228,300
±$35,024 (90% margin)
Minnesota: $329,300
Median gross rent
$1,125
±$591 (90% margin)
Minnesota: $1,280
Where is Island Lake Township, Mahnomen County and what county is it in?
Island Lake Township, Mahnomen County is a township in Mahnomen County, Minnesota. It covers 34.4 square miles of land, 9 residents per square mile in 2020.
One place lies inside Island Lake Township (Mahnomen County): Pine Bend (CDP, 31 in 2020).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Island Lake Township, Mahnomen County, and is it growing?
The Census Bureau estimates that 300 people lived in Island Lake Township, Mahnomen County on July 1, 2025, down 4.5% since 2020, while Minnesota grew 2.2%. The 2020 Census counted 300 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 358 (±56).
| Measure | Island Lake Township, Mahnomen County | Mahnomen County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 358±56 | 5,358 | no clear change |
| Households | 116±18 | 1,885 | no clear change |
| Average household size | 3.09±0.35 | 2.80 | no clear change |
| Housing units | 274±20 | 2,547 | −46 |
Island Lake Township, Mahnomen County's population since 2000
From 218 in 2000 to 300 in 2025: up 37.6%. The 2000, 2010 and 2020 figures are census counts, each for Island Lake Township, Mahnomen County 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 Island Lake Township, Mahnomen County?
The median resident of Island Lake Township, Mahnomen County is 27.9 years old; 36.0% are under 18 and 15.1% are 65 or older. The largest group is non-Hispanic white residents at 78.8%, then non-Hispanic American Indian and Alaska Native residents at 8.9%.
| Measure | Island Lake Township, Mahnomen County | Mahnomen County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 27.9±5.9 | 35.4 | −12.8 |
| Under 18 years | 36.0%±4.6 pts | 31.0% | – |
| 65 years and over | 15.1%±3.6 pts | 17.9% | – |
| Male | 52.0%±4.7 pts | 51.1% | – |
| Hispanic or Latino (any race) | 5.9%±3.9 pts | 4.1% | – |
| White alone, not Hispanic | 78.8%±5.9 pts | 44.4% | +10.3 pts |
| Black or African American alone, not Hispanic | 0.8%±1.2 pts | 0.1% | – |
| Asian alone, not Hispanic | 0.0%±6.1 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 8.9%±4.3 pts | 33.6% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±6.1 pts | 0.1% | – |
| Two or more races, not Hispanic | 5.0%±2.6 pts | 16.7% | – |
| Some other race alone, not Hispanic | 0.6%±0.6 pts | 0.5% | – |
| Born outside the United States | 0.8%±1.2 pts | 1.0% | – |
| Speak a language other than English at home (age 5+) | 26.8%±9.5 pts | 11.7% | – |
| Civilian veterans (age 18+) | 3.9%±2.0 pts | 5.8% | – |
| With a disability | 7.8%±2.9 pts | 16.5% | – |
| No health insurance coverage | 18.2%±6.5 pts | 11.9% | no clear change |
| High school graduate or higher (age 25+) | 85.7%±5.0 pts | 88.1% | – |
| Bachelor's degree or higher (age 25+) | 18.9%±4.7 pts | 16.2% | no clear change |
| Graduate or professional degree (age 25+) | 5.6%±2.4 pts | 4.7% | – |
| Lived in the same house a year earlier | 90.2%±4.0 pts | 92.7% | – |
| Moved from another state in the past year | 0.0%±6.3 pts | 0.3% | – |
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 Island Lake Township, Mahnomen County earn?
Half of Island Lake Township, Mahnomen County's 116 households earn less than $73,750 a year (±$35,242), against $59,441 in Mahnomen County and $89,062 in Minnesota. In 2015-2019 it was $71,534 in 2024 dollars; the margins of error cannot tell the two periods apart. 9.8% of residents live below the poverty line.
| Measure | Island Lake Township, Mahnomen County | Mahnomen County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $73,750±$35,242 | $59,441 | no clear change |
| Mean household income | $86,053±$12,453 | $74,650 | – |
| Per capita income | $28,268±$3,762 | $27,297 | no clear change |
| People below the poverty line | 9.8%±5.0 pts | 18.3% | – |
| Children under 18 below the poverty line | 11.6%±9.4 pts | 22.9% | – |
| Households receiving SNAP | 4.3%±3.5 pts | 21.4% | – |
| Households with a computer | 81.9%±6.8 pts | 90.9% | – |
| Households with a broadband subscription | 77.6%±7.4 pts | 85.5% | – |
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 Island Lake Township, Mahnomen County?
Owners occupy 87.1% of Island Lake Township, Mahnomen County's occupied homes and renters 12.9%. The median owner-occupied home is valued at $228,300 by its owner (±$35,024). The median renter pays $1,125 a month including utilities.
| Measure | Island Lake Township, Mahnomen County | Mahnomen County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $228,300±$35,024 | $161,900 | no clear change |
| Median gross rent | $1,125±$591 | $696 | no clear change |
| Renters paying 35% or more of income on rent | 0.0%±71.2 pts | 28.3% | – |
| Median monthly owner costs, with a mortgage | $1,443±$137 | $1,335 | – |
| Owner-occupied homes | 87.1%±5.6 pts | 73.3% | no clear change |
| Renter-occupied homes | 12.9%±5.6 pts | 26.7% | – |
| Housing units | 274±20 | 2,547 | −46 |
| Homeowner vacancy rate | 7.3%±5.7 pts | 0.9% | – |
| Rental vacancy rate | 0.0%±63.7 pts | 5.9% | – |
| Single-family detached homes | 85.0%±4.4 pts | 80.0% | – |
| Mobile homes | 14.2%±4.2 pts | 8.8% | – |
| Built 2020 or later | 3.3%±2.3 pts | 1.1% | – |
| Built 2010 to 2019 | 8.8%±2.8 pts | 6.5% | – |
| Built 1939 or earlier | 9.5%±3.0 pts | 17.7% | – |
| Households with no vehicle | 14.7%±6.3 pts | 9.0% | – |
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 Island Lake Township, Mahnomen County work and get to work?
58.2% of Island Lake Township, Mahnomen County's workers drive alone and 14.4% work from home. The average trip to work takes 26.4 minutes.
| Measure | Island Lake Township, Mahnomen County | Mahnomen County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 66.0%±6.5 pts | 58.4% | – |
| Unemployment rate | 3.8%±2.8 pts | 9.8% | – |
| Drove alone to work | 58.2%±12.1 pts | 73.5% | – |
| Carpooled | 15.8%±6.5 pts | 10.2% | – |
| Public transportation | 0.0%±14.2 pts | 1.3% | – |
| Walked | 9.6%±7.2 pts | 6.7% | – |
| Worked from home | 14.4%±6.8 pts | 6.6% | – |
| Mean travel time to work | 26.4 min±4.2 | 20.4 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 Island Lake Township, Mahnomen County?
No census tract lies mostly in Island Lake Township, Mahnomen County; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9403Mahnomen County | 2,511 | $62,727 |
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 Island Lake Township, Mahnomen County) · Census block assignment files
How does Island Lake Township, Mahnomen County compare with other places in Minnesota?
By the Census Bureau's July 2025 estimates, Island Lake Township, Mahnomen County is the 11,457th-most populous of the 16,079 U.S. towns and townships that have one and the 843rd-most populous of 1,772 in Minnesota.
Island Lake Township, Mahnomen County 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 | 843rd | 1,772 |
Island Lake Township, Mahnomen County's figures with every place in Minnesota (CSV)
Every place in Minnesota, sortable · Compare Island Lake Township, Mahnomen County 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 Island Lake Township, Mahnomen County?
16 of the 57 figures for Island Lake Township, Mahnomen County 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 Island Lake Township, Mahnomen County 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.