County · Montana
Big Horn County, Montana
Big Horn County, Montana. Big Horn County had 12,752 residents in 2025 by the Census Bureau's estimate, down 2.8% since 2020, while Montana grew 5.6%. It holds 10 places (2 cities, villages and boroughs and 8 census-designated) and 5 census tracts. GEOID 30003.
Residents, July 2025 estimate
12,752
Census Bureau estimate (no margin published)
2020 Census count: 13,124 · ACS 2020-2024: 12,891
Median household income
$58,750
±$2,019 (90% margin)
Montana: $72,509
Median home value
$143,400
±$14,230 (90% margin)
Montana: $375,800
Median gross rent
$697
±$99 (90% margin)
Montana: $1,081
How many people live in Big Horn County, and is it growing?
The 2020 Census counted 13,124 residents in Big Horn County. The Census Bureau estimates 12,752 for July 1, 2025, down 2.8% since 2020, while Montana grew 5.6%. The 2020-2024 American Community Survey puts the population at 12,891 over 4,998 square miles of land.
| Measure | Big Horn County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Total population | 12,891 | 1,116,875 | −496 |
| Households | 3,827±105 | 458,859 | +218 |
| Average household size | 3.32±0.09 | 2.37 | −0.35 |
| Housing units | 4,527±19 | 528,419 | −205 |
Big Horn County's population since 2000
From 12,671 in 2000 to 12,752 in 2025: up 0.6%. 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 Big Horn County?
Big Horn County holds 10 places: 2 cities, villages and boroughs (incorporated places) and 8 census-designated places. The largest is Hardin with 3,696 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Hardin | 3,818 | $60,423 |
|---|---|---|
| Crow Agency | 1,657 | $52,339 |
| BusbyGEOID 3011200 | 719 | $46,071 |
| MuddyGEOID 3052315 | 646 | not published |
| Pryor | 637 | $47,083 |
| Lodge Grass | 441 | $49,375 |
| WyolaGEOID 3082075 | 190 | $63,032 |
| Fort SmithGEOID 3028650 | 170 | $51,190 |
| St. XavierGEOID 3065650 | 78 | not published |
| Forty Mile ColonyGEOID 3028725 | 28 | 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 Big Horn County?
The median resident of Big Horn County is 31.9 years old; 31.3% are under 18 and 14.1% are 65 or older. The largest group is non-Hispanic American Indian and Alaska Native residents at 66.2%, then non-Hispanic white residents at 27.0%.
| Measure | Big Horn County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median age | 31.9±0.7 | 40.4 | +1.2 |
| Under 18 years | 31.3%±0.7 pts | 21.0% | – |
| 65 years and over | 14.1%±0.1 pts | 20.1% | – |
| Hispanic or Latino (any race) | 4.7% | 4.6% | −1.7 pts |
| White alone, not Hispanic | 27.0%±0.2 pts | 83.6% | no clear change |
| Black or African American alone, not Hispanic | 0.3%±0.4 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.2%±0.2 pts | 0.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 66.2%±1.0 pts | 5.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.6%±0.8 pts | 4.7% | – |
| Some other race alone, not Hispanic | 0.0%±0.2 pts | 0.5% | – |
| Born outside the United States | 0.8%±0.6 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 22.3%±3.4 pts | 4.2% | – |
| Civilian veterans (age 18+) | 5.5%±1.2 pts | 9.0% | – |
| With a disability | 13.2%±1.8 pts | 14.5% | – |
| No health insurance coverage | 21.7%±2.7 pts | 8.6% | −10.6 pts |
| High school graduate or higher (age 25+) | 89.7%±2.5 pts | 94.6% | – |
| Bachelor's degree or higher (age 25+) | 17.8%±3.1 pts | 35.2% | no clear change |
| Graduate or professional degree (age 25+) | 5.5%±1.6 pts | 12.0% | – |
| Moved from another state in the past year | 2.4%±1.2 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 Big Horn County earn?
Half of Big Horn County's 3,827 households earn less than $58,750 a year (±$2,019), against $72,509 in Montana. In 2015-2019 it was $61,361 in 2024 dollars; the margins of error cannot tell the two periods apart. 22.1% of residents live below the poverty line.
| Measure | Big Horn County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $58,750±$2,019 | $72,509 | no clear change |
| Mean household income | $73,453±$7,669 | $98,908 | – |
| Per capita income | $22,861±$2,240 | $41,711 | no clear change |
| People below the poverty line | 22.1%±4.0 pts | 11.5% | no clear change |
| Children under 18 below the poverty line | 27.3%±6.4 pts | 12.7% | no clear change |
| Households receiving SNAP | 17.5%±4.0 pts | 7.8% | – |
| Households with a broadband subscription | 82.7%±4.1 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 Big Horn County?
Owners occupy 66.7% of Big Horn County's occupied homes and renters 33.3%. The median owner-occupied home is valued at $143,400 by its owner (±$14,230). The median renter pays $697 a month including utilities, and 13.8% of renters pay 35% or more of their income on rent.
| Measure | Big Horn County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $143,400±$14,230 | $375,800 | no clear change |
| Median gross rent | $697±$99 | $1,081 | no clear change |
| Renters paying 35% or more of income on rent | 13.8%±6.7 pts | 35.5% | no clear change |
| Median monthly owner costs, with a mortgage | $1,522±$173 | $1,798 | – |
| Owner-occupied homes | 66.7%±4.7 pts | 69.2% | no clear change |
| Housing units | 4,527±19 | 528,419 | −205 |
| Homeowner vacancy rate | 0.2%±0.2 pts | 0.9% | – |
| Rental vacancy rate | 3.8%±3.5 pts | 5.3% | – |
| Single-family detached homes | 69.3%±4.5 pts | 68.8% | – |
| Mobile homes | 19.0%±3.3 pts | 9.4% | – |
| Built 2020 or later | 0.4%±0.4 pts | 2.3% | – |
| Built 1939 or earlier | 11.4%±3.1 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 Big Horn County building?
Builders took permits for 0 new housing units across Big Horn 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 Big Horn County get to work?
66.0% of Big Horn County's workers drive alone and 10.4% work from home. The average trip to work takes 19.6 minutes. The unemployment rate in 2020-2024 averaged 13.2%.
| Measure | Big Horn County | Montana | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 57.2%±3.0 pts | 62.9% | – |
| Unemployment rate | 13.2%±2.8 pts | 3.6% | no clear change |
| Drove alone to work | 66.0%±5.7 pts | 71.1% | – |
| Carpooled | 17.6%±5.1 pts | 9.7% | – |
| Public transportation | 0.1%±0.1 pts | 0.6% | – |
| Walked | 5.4%±2.4 pts | 3.9% | – |
| Worked from home | 10.4%±3.4 pts | 12.5% | no clear change |
| Mean travel time to work | 19.6 min±2.2 | 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 Big Horn County's census tracts?
Big Horn County is divided into 5 census tracts. Among those with a reliable estimate, median household income runs from $43,750 (Tract 9404) to $62,250 (Tract 9407).
| Tract 130003000100 | 4,555±199 | $60,389 |
|---|---|---|
| Tract 940430003940400 | 1,782±410 | $43,750 |
| Tract 940530003940500 | 1,159±232 | $52,356 |
| Tract 940630003940600 | 3,300±391 | $55,625 |
| Tract 940730003940700 | 2,095±272 | $62,250 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Big Horn County compare with Montana's other counties?
| Measure | Rank |
|---|---|
| Population | 15th of 56 |
| Growth 2020-2025 | 51st of 56 |
| Residents per square mile | 29th of 56 |
| Median household income | 39th of 56 |
| Median home value | 53rd of 56 |
| Median gross rent | 44th of 56 |
| Poverty rate | 6th of 56 |
| Bachelor's degree or higher | 54th of 56 |
| Median age | 55th 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 Big Horn 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.