County · Montana
Granite County, Montana
Granite County, Montana. Granite County had 3,658 residents in 2025 by the Census Bureau's estimate, up 10.7% since 2020, faster than Montana (+5.6%). It holds 4 places (2 cities, villages and boroughs and 2 census-designated) and 2 census tracts. GEOID 30039.
Residents, July 2025 estimate
3,658
Census Bureau estimate (no margin published)
2020 Census count: 3,309 · ACS 2020-2024: 3,462
Median household income
$59,265
±$11,108 (90% margin)
Montana: $72,509
Median home value
$352,700
±$27,252 (90% margin)
Montana: $375,800
Median gross rent
$675
±$145 (90% margin)
Montana: $1,081
How many people live in Granite County, and is it growing?
The 2020 Census counted 3,309 residents in Granite County. The Census Bureau estimates 3,658 for July 1, 2025, up 10.7% since 2020, faster than Montana (+5.6%). The 2020-2024 American Community Survey puts the population at 3,462 over 1,727 square miles of land.
| Measure | Granite County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,462 | 1,116,875 | +151 |
| Households | 1,514±144 | 458,859 | +206 |
| Average household size | 2.21±0.21 | 2.37 | no clear change |
| Housing units | 2,602±14 | 528,419 | −230 |
Granite County's population since 2000
From 2,830 in 2000 to 3,658 in 2025: up 29.3%. 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 Granite County?
Granite County holds 4 places: 2 cities, villages and boroughs (incorporated places) and 2 census-designated places. The largest is Philipsburg with 926 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Philipsburg | 841 | $29,773 |
|---|---|---|
| DrummondGEOID 3021850 | 272 | $58,456 |
| MaxvilleGEOID 3048625 | 138 | not published |
| HallGEOID 3033625 | 51 | $46,985 |
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 Granite County?
The median resident of Granite County is 53.0 years old; 14.7% are under 18 and 31.3% are 65 or older. The largest group is non-Hispanic white residents at 90.0%, then non-Hispanic residents of two or more races at 4.0%.
| Measure | Granite County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median age | 53.0±1.1 | 40.4 | −1.3 |
| Under 18 years | 14.7%±1.2 pts | 21.0% | – |
| 65 years and over | 31.3%±0.2 pts | 20.1% | – |
| Hispanic or Latino (any race) | 2.6%±1.7 pts | 4.6% | no clear change |
| White alone, not Hispanic | 90.0%±2.1 pts | 83.6% | −4.3 pts |
| Black or African American alone, not Hispanic | 0.1%±0.5 pts | 0.4% | – |
| Asian alone, not Hispanic | 0.9%±1.4 pts | 0.8% | – |
| American Indian and Alaska Native alone, not Hispanic | 1.8%±1.6 pts | 5.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 4.0%±2.4 pts | 4.7% | – |
| Some other race alone, not Hispanic | 0.5%±0.7 pts | 0.5% | – |
| Born outside the United States | 2.2%±1.5 pts | 2.3% | – |
| Speak a language other than English at home (age 5+) | 3.0%±1.5 pts | 4.2% | – |
| Civilian veterans (age 18+) | 11.3%±3.0 pts | 9.0% | – |
| With a disability | 16.4%±3.5 pts | 14.5% | – |
| No health insurance coverage | 8.5%±3.2 pts | 8.6% | no clear change |
| High school graduate or higher (age 25+) | 93.6%±2.1 pts | 94.6% | – |
| Bachelor's degree or higher (age 25+) | 34.2%±4.6 pts | 35.2% | no clear change |
| Graduate or professional degree (age 25+) | 5.7%±2.7 pts | 12.0% | – |
| Moved from another state in the past year | 3.4%±2.5 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 Granite County earn?
Half of Granite County's 1,514 households earn less than $59,265 a year (±$11,108), against $72,509 in Montana. In 2015-2019 it was $61,388 in 2024 dollars; the margins of error cannot tell the two periods apart. 10.2% of residents live below the poverty line.
| Measure | Granite County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $59,265±$11,108 | $72,509 | no clear change |
| Mean household income | $83,119±$11,730 | $98,908 | – |
| Per capita income | $39,904±$6,134 | $41,711 | no clear change |
| People below the poverty line | 10.2%±3.6 pts | 11.5% | no clear change |
| Children under 18 below the poverty line | 1.3%±1.6 pts | 12.7% | – |
| Households receiving SNAP | 5.7%±2.6 pts | 7.8% | – |
| Households with a broadband subscription | 86.9%±3.7 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 Granite County?
Owners occupy 77.9% of Granite County's occupied homes and renters 22.1%. The median owner-occupied home is valued at $352,700 by its owner (±$27,252). The median renter pays $675 a month including utilities, and 42.2% of renters pay 35% or more of their income on rent.
| Measure | Granite County | Montana | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $352,700±$27,252 | $375,800 | +$77,025 |
| Median gross rent | $675±$145 | $1,081 | no clear change |
| Renters paying 35% or more of income on rent | 42.2%±17.8 pts | 35.5% | – |
| Median monthly owner costs, with a mortgage | $1,708±$126 | $1,798 | – |
| Owner-occupied homes | 77.9%±6.6 pts | 69.2% | no clear change |
| Housing units | 2,602±14 | 528,419 | −230 |
| Homeowner vacancy rate | 1.7%±1.8 pts | 0.9% | – |
| Rental vacancy rate | 2.3%±3.8 pts | 5.3% | – |
| Single-family detached homes | 84.2%±4.4 pts | 68.8% | – |
| Mobile homes | 10.3%±3.8 pts | 9.4% | – |
| Built 2020 or later | 2.3%±1.7 pts | 2.3% | – |
| Built 1939 or earlier | 20.4%±4.8 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 do people in Granite County get to work?
67.0% of Granite County's workers drive alone and 9.9% work from home. The average trip to work takes 27.6 minutes.
| Measure | Granite County | Montana | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 53.6%±3.5 pts | 62.9% | – |
| Unemployment rate | 3.7%±2.8 pts | 3.6% | – |
| Drove alone to work | 67.0%±6.1 pts | 71.1% | – |
| Carpooled | 16.4%±6.3 pts | 9.7% | – |
| Public transportation | 0.0%±2.0 pts | 0.6% | – |
| Walked | 5.9%±4.0 pts | 3.9% | – |
| Worked from home | 9.9%±4.3 pts | 12.5% | no clear change |
| Mean travel time to work | 27.6 min±3.8 | 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 Granite County's census tracts?
Granite County is divided into 2 census tracts. Among those with a reliable estimate, median household income runs from $55,156 (Tract 9617.02) to $59,816 (Tract 9617.01).
| Tract 9617.0130039961701 | 1,587±159 | $59,816 |
|---|---|---|
| Tract 9617.0230039961702 | 1,875±159 | $55,156 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Granite County compare with Montana's other counties?
| Measure | Rank |
|---|---|
| Population | 41st of 56 |
| Growth 2020-2025 | 8th of 56 |
| Residents per square mile | 35th of 56 |
| Median household income | 36th of 56 |
| Median home value | 15th of 56 |
| Median gross rent | 46th of 56 |
| Poverty rate | 38th of 56 |
| Bachelor's degree or higher | 9th of 56 |
| Median age | 7th 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 Granite 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.