Treasure County, Montana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 55th-largest in Montana
The population of Treasure County, Montana is 761 as of the 2023 American Community Survey, making it the 55th-largest county in Montana. The median household income is $73,036, the median home value is $215,300, and the median age is 53.4.
The population of Treasure County has grown 3.5% since 2010 (714 → 739), a +0.25% annualized rate.
761
Population
+0.25%
Annual growth
1
People / sq mi
$73,036
Median Income
$215,300
Median Home Value
Treasure County covers 978 sq mi of land at 0.8 people per square mile.
About Treasure County, MT
Treasure County stands apart on settlement density — it is among the most sparsely settled of US counties, at roughly 1 people per square mile. With 761 residents, Treasure County is a county in Montana.
Median household income is $73,036, below the US median of $78,538. Only 6.5% of residents live in poverty, below the national 12.4%. Median home value is $215,300, with typical rent around $992.
Educational attainment is on the higher side for US counties — 32.8% of adults hold a four-year degree, below the national 35.0%. Remote work is widespread — 20.6% of workers stay home, above the national 14.0%, and the average commute runs about 17 minutes each way.
Treasure County Population History (2010-2024)
The county of Treasure County had a population of 714 in 2010 and 739 in 2024, a 3.5% growth over 14 years. The peak was 768 in 2021. Average annual growth rate: 0.30%.
739
Population (2024)
714
Population (2010)
768
Peak (2021)
0.30%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 714 |
| 2011 | 709 |
| 2012 | 717 |
| 2013 | 688 |
| 2014 | 684 |
| 2015 | 680 |
| 2016 | 678 |
| 2017 | 668 |
| 2018 | 667 |
| 2019 | 697 |
| 2020 | 758 |
| 2021 | 768 |
| 2022 | 749 |
| 2023 | 767 |
| 2024 | 739 |
Race & Ethnicity
| White | 93.7% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.1% |
| Two or More Races | 0.0% |
Age & Sex
53.4
Median Age
46.0%
Female
54.0%
Male
22.6%
Age 65+
Age Distribution
Children (under 15): 14.5% · Seniors (65+): 22.6%
Income & Poverty
| Median household income | $73,036+$3,114 vs state |
| Mean household income | $94,624 |
| Per-capita income | $45,882 |
| Poverty rate | 6.5%-0.6% vs state |
| Unemployment rate | 0.8% |
| Employment-to-population | 68.2% |
Top Industries by Employment
The largest employment sector in Treasure County is agriculture, accounting for 40.6% of workers.
How residents commute
0.0%
Drive alone
1.4%
Carpool
73.2%
Public transit
20.6%
Work from home
17.2 min
Avg commute
Housing
$215,300$-122,800 vs state
Median home value
$992
Median rent
66.5%
Homeownership rate
479
Total housing units
79.7%
Occupied
20.3%
Vacant
33.5%
Renter-occupied
Social & access
94.6%
With health insurance
94.0%
With broadband internet
35.9%
Foreign-born
9.4%
Veterans (18+)
14.8%
With a disability
97.7%
Speak language other than English at home
Education
94.9%
High School+
32.8%
Bachelor's+
Largest cities in Montana
Other counties in Montana
Part of Montana
Metro areas in Montana
County rankings
Frequently Asked Questions
Treasure County, Montana has a population of 761 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 55th-largest county in Montana. Population density is 1 people per square mile.
The population of Treasure County has grown 3.5% since 2010 (714 → 739), a +0.25% annualized rate.
The median household income in Treasure County, Montana is $73,036, with mean (average) household income of $94,624 and per-capita income of $45,882. 6.5% of residents live below the federal poverty level.
In Treasure County, the largest racial and ethnic groups are White (93.7%), Hispanic or Latino (0.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Treasure County, Montana is 53.4 years. Residents are 46.0% female and 54.0% male.
The median home value in Treasure County is $215,300 and median monthly rent is $992. 66.5% of occupied housing units are owner-occupied. The county has 479 total housing units, 20.3% of which are vacant.
The largest employment sector in Treasure County, Montana is agriculture, forestry, fishing, and mining, employing 40.6% of workers. The unemployment rate is 0.8%.
Billings is among the largest cities associated with Treasure County, Montana, with a population of 118,321.
Treasure County, MT Climate
Treasure County, MT has an average annual temperature of 7.7°C (46°F) and receives about 347 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
7.7°C
Avg Temp
347
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -7° / 20° | 14 mm |
| February | -3° / 26° | 10 mm |
| March | 2° / 35° | 18 mm |
| April | 7° / 45° | 35 mm |
| May | 13° / 55° | 63 mm |
| June | 18° / 64° | 57 mm |
| July | 22° / 71° | 32 mm |
| August | 21° / 70° | 28 mm |
| September | 15° / 59° | 37 mm |
| October | 9° / 48° | 25 mm |
| November | 1° / 34° | 13 mm |
| December | -4° / 24° | 15 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Treasure County, MT
The most comfortable months to visit Treasure County, MT are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -13°C low). May is usually the wettest month.
Where to stay near Treasure County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.