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
Among US counties, Miller County stands out first on household income: a median of $55,172, below the US median of $78,538. Miller County is a county in Missouri with a population of 25,081. It ranks #42 among counties in Missouri by population.
Incomes run on the lower side: a median household income of $55,172, below the US median of $78,538. Poverty runs at 9.2%, below the national 12.4%. Median home value is $169,800, with typical rent around $724.
Degree attainment is mid-range for US counties: 21.0% of adults hold a four-year degree, below the national 35.0%. Around 6.0% of workers work from home, below the national 14.0%, and the average commute runs about 28 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.
Miller County, MO Climate
Miller County, MO has an average annual temperature of 13.1°C (56°F) and receives about 1032 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
13.1°C
Avg Temp
1032
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -1° / 31° | 40 mm |
| February | 2° / 36° | 49 mm |
| March | 8° / 46° | 89 mm |
| April | 13° / 56° | 95 mm |
| May | 18° / 64° | 125 mm |
| June | 23° / 73° | 107 mm |
| July | 26° / 78° | 85 mm |
| August | 25° / 77° | 90 mm |
| September | 20° / 69° | 107 mm |
| October | 14° / 58° | 93 mm |
| November | 8° / 46° | 85 mm |
| December | 2° / 35° | 67 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 Miller County, MO
The most comfortable months to visit Miller County, MO are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 32°C high). The coldest is January (near -6°C low). May is usually the wettest month.
Where to stay near Miller County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.