Miller County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 42nd-largest in Missouri
The population of Miller County, Missouri is 25,081 as of the 2023 American Community Survey, making it the 42nd-largest county in Missouri. The median household income is $55,172, the median home value is $169,800, and the median age is 40.8.
The population of Miller County has grown 3.9% since 2010 (24,701 → 25,668), a +0.27% annualized rate.
25,081
Population
+0.27%
Annual growth
42
People / sq mi
$55,172
Median Income
$169,800
Median Home Value
Miller County covers 593 sq mi of land at 42.3 people per square mile.
About Miller County, MO
Miller County is a county in Missouri with a population of 25,081. It ranks #42 among counties in Missouri by population. The median age is 40.8, older than the national median. The population is 50.0% male and 50.0% female.
The median household income in Miller County is $55,172, below the US median of $74,580. 9.2% of residents live below the federal poverty level. Home values sit at a median of $169,800, with monthly rent averaging $724. The homeownership rate of 76.1% is higher than the national rate of 64.8%.
Educational attainment in Miller County reflects 21.0% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.0% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 28.2 minutes each way.
Miller County Population History (2010-2024)
The county of Miller County had a population of 24,701 in 2010 and 25,668 in 2024, a 3.9% growth over 14 years. The peak was 25,668 in 2024. Average annual growth rate: 0.28%.
25,668
Population (2024)
24,701
Population (2010)
25,668
Peak (2024)
0.28%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 24,701 |
| 2011 | 24,705 |
| 2012 | 24,573 |
| 2013 | 24,805 |
| 2014 | 24,824 |
| 2015 | 24,865 |
| 2016 | 24,981 |
| 2017 | 25,199 |
| 2018 | 25,269 |
| 2019 | 25,607 |
| 2020 | 24,778 |
| 2021 | 24,949 |
| 2022 | 25,384 |
| 2023 | 25,566 |
| 2024 | 25,668 |
Race & Ethnicity
| White | 95.2% |
| Black or African American | 1.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
40.8
Median Age
50.0%
Female
50.0%
Male
19.4%
Age 65+
Age Distribution
Children (under 15): 19.3% · Seniors (65+): 19.4%
Income & Poverty
| Median household income | $55,172$-13,748 vs state |
| Mean household income | $74,505 |
| Per-capita income | $30,290 |
| Poverty rate | 9.2%+0.8% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 56.0% |
Top Industries by Employment
The largest employment sector in Miller County is professional & business services, accounting for 22.2% of workers.
How residents commute
0.0%
Drive alone
0.9%
Carpool
80.5%
Public transit
6.0%
Work from home
28.2 min
Avg commute
Housing
$169,800$-45,800 vs state
Median home value
$724
Median rent
76.1%
Homeownership rate
12,508
Total housing units
80.2%
Occupied
19.8%
Vacant
23.9%
Renter-occupied
Social & access
89.1%
With health insurance
92.8%
With broadband internet
24.1%
Foreign-born
8.9%
Veterans (18+)
18.4%
With a disability
96.0%
Speak language other than English at home
Education
89.5%
High School+
21.0%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Miller County, Missouri has a population of 25,081 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 42nd-largest county in Missouri. Population density is 42 people per square mile.
The population of Miller County has grown 3.9% since 2010 (24,701 → 25,668), a +0.27% annualized rate.
The median household income in Miller County, Missouri is $55,172, with mean (average) household income of $74,505 and per-capita income of $30,290. 9.2% of residents live below the federal poverty level.
In Miller County, the largest racial and ethnic groups are White (95.2%), Hispanic or Latino (1.6%), Black or African American (1.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Miller County, Missouri is 40.8 years. Residents are 50.0% female and 50.0% male.
The median home value in Miller County is $169,800 and median monthly rent is $724. 76.1% of occupied housing units are owner-occupied. The county has 12,508 total housing units, 19.8% of which are vacant.
The largest employment sector in Miller County, Missouri is professional, scientific, and management services, employing 22.2% of workers. The unemployment rate is 3.0%.
Kansas City is among the largest cities associated with Miller County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.