County · Montana
Blaine County, Montana
Blaine County, Montana. Blaine County had 6,860 residents in 2025 by the Census Bureau's estimate, down 2.6% since 2020, while Montana grew 5.6%. It holds 11 places (2 cities, villages and boroughs and 9 census-designated) and 4 census tracts. GEOID 30005.
Residents, July 2025 estimate
6,860
Census Bureau estimate (no margin published)
2020 Census count: 7,044 · ACS 2020-2024: 6,949
Median household income
$64,813
±$5,933 (90% margin)
Montana: $72,509
Median home value
$155,500
±$14,647 (90% margin)
Montana: $375,800
Median gross rent
$660
±$75 (90% margin)
Montana: $1,081
How many people live in Blaine County, and is it growing?
The 2020 Census counted 7,044 residents in Blaine County. The Census Bureau estimates 6,860 for July 1, 2025, down 2.6% since 2020, while Montana grew 5.6%. The 2020-2024 American Community Survey puts the population at 6,949 over 4,228 square miles of land.
| Measure | Blaine County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Total population | 6,949 | 1,116,875 | +230 |
| Households | 2,280±101 | 458,859 | no clear change |
| Average household size | 2.96±0.13 | 2.37 | no clear change |
| Housing units | 2,823±22 | 528,419 | no clear change |
Blaine County's population since 2000
From 7,009 in 2000 to 6,860 in 2025: down 2.1%. The 2000, 2010 and 2020 figures are census counts. 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); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Blaine County?
Blaine County holds 11 places: 2 cities, villages and boroughs (incorporated places) and 9 census-designated places. The largest is Fort Belknap Agency with 1,227 residents (2020-2024). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Fort Belknap Agency | 1,567 | $46,071 |
|---|---|---|
| Chinook | 1,185 | $61,750 |
| Hays | 996 | $52,250 |
| Harlem | 769 | $82,596 |
| Lodge PoleGEOID 3044350 | 294 | not published |
| Turner ColonyGEOID 3075258 | 135 | $133,125 |
| TurnerGEOID 3075250 | 90 | $55,179 |
| ZurichGEOID 3082750 | 29 | $81,250 |
| North Harlem ColonyGEOID 3054684 | 26 | $127,000 |
| HogelandGEOID 3036925 | 14 | not published |
| Hartland ColonyGEOID 3034584 | 0 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Blaine County?
The median resident of Blaine County is 35.6 years old; 29.0% are under 18 and 16.7% are 65 or older. The largest group is non-Hispanic American Indian and Alaska Native residents at 47.0%, then non-Hispanic white residents at 44.1%. 1.7% of residents were born outside the United States.
| Measure | Blaine County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median age | 35.6±0.8 | 40.4 | +1.8 |
| Under 18 years | 29.0%±0.2 pts | 21.0% | – |
| 65 years and over | 16.7%±0.1 pts | 20.1% | – |
| Hispanic or Latino (any race) | 2.8% | 4.6% | −0.7 pts |
| White alone, not Hispanic | 44.1%±0.2 pts | 83.6% | −0.5 pts |
| Black or African American alone, not Hispanic | 0.4%±0.4 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.1%±0.1 pts | 0.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 47.0%±1.7 pts | 5.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.4 pts | 0.0% | – |
| Two or more races, not Hispanic | 5.6%±1.8 pts | 4.7% | – |
| Some other race alone, not Hispanic | 0.0%±0.4 pts | 0.5% | – |
| Born outside the United States | 1.7%±0.8 pts | 2.3% | +1.0 pts |
| Speak a language other than English at home (age 5+) | 10.0%±2.3 pts | 4.2% | – |
| Civilian veterans (age 18+) | 6.2%±1.5 pts | 9.0% | – |
| With a disability | 19.4%±2.8 pts | 14.5% | – |
| No health insurance coverage | 18.3%±3.7 pts | 8.6% | no clear change |
| High school graduate or higher (age 25+) | 90.7%±2.1 pts | 94.6% | – |
| Bachelor's degree or higher (age 25+) | 23.9%±2.8 pts | 35.2% | no clear change |
| Graduate or professional degree (age 25+) | 7.4%±1.7 pts | 12.0% | – |
| Moved from another state in the past year | 1.0%±0.7 pts | 3.7% | – |
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 Blaine County earn?
Half of Blaine County's 2,280 households earn less than $64,813 a year (±$5,933), against $72,509 in Montana. In 2015-2019 the median was $50,802 in 2024 dollars, so it rose by $14,011 after inflation. 18.3% of residents live below the poverty line.
| Measure | Blaine County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $64,813±$5,933 | $72,509 | +$14,011 |
| Mean household income | $84,264±$9,959 | $98,908 | – |
| Per capita income | $29,519±$3,194 | $41,711 | +$5,818 |
| People below the poverty line | 18.3%±4.0 pts | 11.5% | −12.2 pts |
| Children under 18 below the poverty line | 18.1%±6.0 pts | 12.7% | −28.3 pts |
| Households receiving SNAP | 14.7%±3.1 pts | 7.8% | – |
| Households with a broadband subscription | 83.7%±3.5 pts | 89.4% | – |
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 Blaine County?
Owners occupy 65.7% of Blaine County's occupied homes and renters 34.3%. The median owner-occupied home is valued at $155,500 by its owner (±$14,647). The median renter pays $660 a month including utilities, and 21.4% of renters pay 35% or more of their income on rent.
| Measure | Blaine County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $155,500±$14,647 | $375,800 | +$39,446 |
| Median gross rent | $660±$75 | $1,081 | no clear change |
| Renters paying 35% or more of income on rent | 21.4%±8.2 pts | 35.5% | no clear change |
| Median monthly owner costs, with a mortgage | $1,475±$295 | $1,798 | – |
| Owner-occupied homes | 65.7%±4.0 pts | 69.2% | +7.7 pts |
| Housing units | 2,823±22 | 528,419 | no clear change |
| Homeowner vacancy rate | 0.8%±1.1 pts | 0.9% | – |
| Rental vacancy rate | 6.4%±4.0 pts | 5.3% | – |
| Single-family detached homes | 78.5%±3.3 pts | 68.8% | – |
| Mobile homes | 7.9%±2.0 pts | 9.4% | – |
| Built 2020 or later | 1.3%±1.1 pts | 2.3% | – |
| Built 1939 or earlier | 20.4%±3.9 pts | 12.8% | – |
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 many new homes is Blaine County building?
Builders took permits for 0 new housing units across Blaine County in 2025 (0 single-family), 0.0 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Blaine County get to work?
59.8% of Blaine County's workers drive alone and 16.6% work from home. The average trip to work takes 15.4 minutes. The unemployment rate in 2020-2024 averaged 13.6%.
| Measure | Blaine County | Montana | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 62.1%±2.8 pts | 62.9% | – |
| Unemployment rate | 13.6%±2.8 pts | 3.6% | no clear change |
| Drove alone to work | 59.8%±4.9 pts | 71.1% | – |
| Carpooled | 15.8%±3.7 pts | 9.7% | – |
| Public transportation | 0.6%±1.4 pts | 0.6% | – |
| Walked | 5.1%±2.3 pts | 3.9% | – |
| Worked from home | 16.6%±3.6 pts | 12.5% | +9.7 pts |
| Mean travel time to work | 15.4 min±1.4 | 19.1 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 are Blaine County's census tracts?
Blaine County is divided into 4 census tracts. Among those with a reliable estimate, median household income runs from $52,250 (Tract 9402) to $80,893 (Tract 1).
| Tract 130005000100 | 1,533±210 | $80,893 |
|---|---|---|
| Tract 230005000200 | 2,457±206 | $73,177 |
| Tract 940130005940100 | 1,359±208 | $36,136 |
| Tract 940230005940200 | 1,600±215 | $52,250 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Blaine County compare with Montana's other counties?
| Measure | Rank |
|---|---|
| Population | 31st of 56 |
| Growth 2020-2025 | 49th of 56 |
| Residents per square mile | 38th of 56 |
| Median household income | 29th of 56 |
| Median home value | 52nd of 56 |
| Median gross rent | 48th of 56 |
| Poverty rate | 10th of 56 |
| Bachelor's degree or higher | 36th of 56 |
| Median age | 51st of 56 |
Source: PlainCities ranks 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 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 Blaine 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.