Park County, Montana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 11th-largest in Montana
The population of Park County, Montana is 17,484 as of the 2023 American Community Survey, making it the 11th-largest county in Montana. The median household income is $66,607, the median home value is $429,700, and the median age is 46.2.
The population of Park County has grown 15.9% since 2010 (15,595 → 18,074), a +1.06% annualized rate.
17,484
Population
+1.06%
Annual growth
6
People / sq mi
$66,607
Median Income
$429,700
Median Home Value
Park County covers 2,802 sq mi of land at 6.2 people per square mile.
About Park County, MT
Park County is a county in Montana with a population of 17,484. It ranks #11 among counties in Montana by population. The median age is 46.2, older than the national median. The population is 50.4% male and 49.6% female.
The median household income in Park County is $66,607, below the US median of $74,580. 7.8% of residents live below the federal poverty level. Home values sit at a median of $429,700, with monthly rent averaging $927. The homeownership rate of 69.6% is higher than the national rate of 64.8%.
Educational attainment in Park County reflects 38.1% of adults 25 and older holding a bachelor's degree or higher, above the national average of 34.3%. Roughly 15.9% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 24.6 minutes each way.
Park County Population History (2010-2024)
The county of Park County had a population of 15,595 in 2010 and 18,074 in 2024, a 15.9% growth over 14 years. The peak was 18,074 in 2024. Average annual growth rate: 1.06%.
18,074
Population (2024)
15,595
Population (2010)
18,074
Peak (2024)
1.06%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 15,595 |
| 2011 | 15,512 |
| 2012 | 15,597 |
| 2013 | 15,705 |
| 2014 | 15,926 |
| 2015 | 16,013 |
| 2016 | 16,138 |
| 2017 | 16,392 |
| 2018 | 16,662 |
| 2019 | 16,612 |
| 2020 | 17,229 |
| 2021 | 17,525 |
| 2022 | 17,783 |
| 2023 | 17,938 |
| 2024 | 18,074 |
Race & Ethnicity
| White | 92.1% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.0% |
| Two or More Races | 0.0% |
Age & Sex
46.2
Median Age
49.6%
Female
50.4%
Male
24.2%
Age 65+
Age Distribution
Children (under 15): 14.0% · Seniors (65+): 24.2%
Income & Poverty
| Median household income | $66,607$-3,315 vs state |
| Mean household income | $95,941 |
| Per-capita income | $45,894 |
| Poverty rate | 7.8%+0.7% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 60.9% |
Top Industries by Employment
The largest employment sector in Park County is professional & business services, accounting for 16.7% of workers.
How residents commute
0.8%
Drive alone
3.0%
Carpool
67.4%
Public transit
15.9%
Work from home
24.6 min
Avg commute
Housing
$429,700+$91,600 vs state
Median home value
$927
Median rent
69.6%
Homeownership rate
9,597
Total housing units
86.0%
Occupied
14.0%
Vacant
30.4%
Renter-occupied
Social & access
91.5%
With health insurance
94.5%
With broadband internet
59.9%
Foreign-born
10.7%
Veterans (18+)
12.0%
With a disability
97.1%
Speak language other than English at home
Education
96.7%
High School+
38.1%
Bachelor's+
Largest cities in Montana
Other counties in Montana
Part of Montana
Metro areas in Montana
County rankings
Frequently Asked Questions
Park County, Montana has a population of 17,484 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 11th-largest county in Montana. Population density is 6 people per square mile.
The population of Park County has grown 15.9% since 2010 (15,595 → 18,074), a +1.06% annualized rate.
The median household income in Park County, Montana is $66,607, with mean (average) household income of $95,941 and per-capita income of $45,894. 7.8% of residents live below the federal poverty level.
In Park County, the largest racial and ethnic groups are White (92.1%), Hispanic or Latino (3.0%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Park County, Montana is 46.2 years. Residents are 49.6% female and 50.4% male.
The median home value in Park County is $429,700 and median monthly rent is $927. 69.6% of occupied housing units are owner-occupied. The county has 9,597 total housing units, 14.0% of which are vacant.
The largest employment sector in Park County, Montana is professional, scientific, and management services, employing 16.7% of workers. The unemployment rate is 1.8%.
Billings is among the largest cities associated with Park County, Montana, with a population of 118,321.
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Statewide data for Montana
Population, race, income, age, and trends across Montana
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.