Sheridan County, Montana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 40th-largest in Montana
The population of Sheridan County, Montana is 3,677 as of the 2023 American Community Survey, making it the 40th-largest county in Montana. The median household income is $63,654, the median home value is $111,600, and the median age is 44.7.
The population of Sheridan County has grown 2.4% since 2010 (3,368 → 3,448), a +0.17% annualized rate.
3,677
Population
+0.17%
Annual growth
2
People / sq mi
$63,654
Median Income
$111,600
Median Home Value
Sheridan County covers 1,677 sq mi of land at 2.2 people per square mile.
About Sheridan County, MT
Sheridan County is a county in Montana with a population of 3,677. It ranks #40 among counties in Montana by population. The median age is 44.7, older than the national median. The population is 53.1% male and 46.9% female.
The median household income in Sheridan County is $63,654, below the US median of $74,580. 6.9% of residents live below the federal poverty level. Home values sit at a median of $111,600, with monthly rent averaging $749. The homeownership rate of 76.6% is higher than the national rate of 64.8%.
Educational attainment in Sheridan County reflects 24.7% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 4.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 14.2 minutes each way.
Sheridan County Population History (2010-2024)
The county of Sheridan County had a population of 3,368 in 2010 and 3,448 in 2024, a 2.4% growth over 14 years. The peak was 3,673 in 2015. Average annual growth rate: 0.20%.
3,448
Population (2024)
3,368
Population (2010)
3,673
Peak (2015)
0.20%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,368 |
| 2011 | 3,418 |
| 2012 | 3,549 |
| 2013 | 3,626 |
| 2014 | 3,661 |
| 2015 | 3,673 |
| 2016 | 3,609 |
| 2017 | 3,461 |
| 2018 | 3,379 |
| 2019 | 3,318 |
| 2020 | 3,536 |
| 2021 | 3,572 |
| 2022 | 3,550 |
| 2023 | 3,490 |
| 2024 | 3,448 |
Race & Ethnicity
| White | 92.2% |
| Black or African American | 0.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 4.3% |
| Two or More Races | 0.0% |
Age & Sex
44.7
Median Age
46.9%
Female
53.1%
Male
22.8%
Age 65+
Age Distribution
Children (under 15): 19.2% · Seniors (65+): 22.8%
Income & Poverty
| Median household income | $63,654$-6,268 vs state |
| Mean household income | $94,455 |
| Per-capita income | $41,202 |
| Poverty rate | 6.9%-0.2% vs state |
| Unemployment rate | 1.5% |
| Employment-to-population | 59.0% |
Top Industries by Employment
The largest employment sector in Sheridan County is agriculture, accounting for 23.5% of workers.
How residents commute
0.7%
Drive alone
8.8%
Carpool
71.1%
Public transit
4.0%
Work from home
14.2 min
Avg commute
Housing
$111,600$-226,500 vs state
Median home value
$749
Median rent
76.6%
Homeownership rate
2,049
Total housing units
71.7%
Occupied
28.3%
Vacant
23.4%
Renter-occupied
Social & access
90.4%
With health insurance
93.1%
With broadband internet
42.6%
Foreign-born
6.2%
Veterans (18+)
15.8%
With a disability
99.0%
Speak language other than English at home
Education
91.5%
High School+
24.7%
Bachelor's+
Largest cities in Montana
Other counties in Montana
Part of Montana
Metro areas in Montana
County rankings
Frequently Asked Questions
Sheridan County, Montana has a population of 3,677 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 40th-largest county in Montana. Population density is 2 people per square mile.
The population of Sheridan County has grown 2.4% since 2010 (3,368 → 3,448), a +0.17% annualized rate.
The median household income in Sheridan County, Montana is $63,654, with mean (average) household income of $94,455 and per-capita income of $41,202. 6.9% of residents live below the federal poverty level.
In Sheridan County, the largest racial and ethnic groups are White (92.2%), Hispanic or Latino (4.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sheridan County, Montana is 44.7 years. Residents are 46.9% female and 53.1% male.
The median home value in Sheridan County is $111,600 and median monthly rent is $749. 76.6% of occupied housing units are owner-occupied. The county has 2,049 total housing units, 28.3% of which are vacant.
The largest employment sector in Sheridan County, Montana is agriculture, forestry, fishing, and mining, employing 23.5% of workers. The unemployment rate is 1.5%.
Billings is among the largest cities associated with Sheridan County, Montana, with a population of 118,321.
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Full rankings of Montana counties
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.