Mississippi County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 75th-largest in Missouri
The population of Mississippi County, Missouri is 12,079 as of the 2023 American Community Survey, making it the 75th-largest county in Missouri. The median household income is $46,258, the median home value is $100,300, and the median age is 42.2.
The population of Mississippi County has declined 18.0% since 2010 (14,333 → 11,750), a -1.41% annualized rate.
12,079
Population
-1.41%
Annual growth
29
People / sq mi
$46,258
Median Income
$100,300
Median Home Value
Mississippi County covers 412 sq mi of land at 29.3 people per square mile.
About Mississippi County, MO
Mississippi County is a county in Missouri with a population of 12,079. It ranks #75 among counties in Missouri by population. The median age is 42.2, older than the national median. The population is 52.9% male and 47.1% female.
The median household income in Mississippi County is $46,258, below the US median of $74,580. 18.9% of residents live below the federal poverty level. Home values sit at a median of $100,300, with monthly rent averaging $782. The homeownership rate of 60.9% is lower than the national rate of 64.8%.
Educational attainment in Mississippi County reflects 14.1% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 4.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 20.6 minutes each way.
Mississippi County Population History (2010-2024)
The county of Mississippi County had a population of 14,333 in 2010 and 11,750 in 2024, a -18.0% growth over 14 years. The peak was 14,333 in 2010. Average annual growth rate: -1.38%.
11,750
Population (2024)
14,333
Population (2010)
14,333
Peak (2010)
-1.38%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 14,333 |
| 2011 | 14,241 |
| 2012 | 14,288 |
| 2013 | 14,189 |
| 2014 | 14,197 |
| 2015 | 13,984 |
| 2016 | 13,755 |
| 2017 | 13,615 |
| 2018 | 13,369 |
| 2019 | 13,208 |
| 2020 | 12,121 |
| 2021 | 12,105 |
| 2022 | 11,683 |
| 2023 | 11,852 |
| 2024 | 11,750 |
Race & Ethnicity
| White | 71.9% |
| Black or African American | 22.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
42.2
Median Age
47.1%
Female
52.9%
Male
18.3%
Age 65+
Age Distribution
Children (under 15): 17.4% · Seniors (65+): 18.3%
Income & Poverty
| Median household income | $46,258$-22,662 vs state |
| Mean household income | $58,113 |
| Per-capita income | $22,547 |
| Poverty rate | 18.9%+10.5% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 46.1% |
Top Industries by Employment
The largest employment sector in Mississippi County is professional & business services, accounting for 24.3% of workers.
How residents commute
0.1%
Drive alone
3.4%
Carpool
82.0%
Public transit
4.4%
Work from home
20.6 min
Avg commute
Housing
$100,300$-115,300 vs state
Median home value
$782
Median rent
60.9%
Homeownership rate
5,282
Total housing units
86.3%
Occupied
13.7%
Vacant
39.1%
Renter-occupied
Social & access
88.9%
With health insurance
87.8%
With broadband internet
16.7%
Foreign-born
5.0%
Veterans (18+)
25.0%
With a disability
98.3%
Speak language other than English at home
Education
81.9%
High School+
14.1%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Mississippi County, Missouri has a population of 12,079 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 75th-largest county in Missouri. Population density is 29 people per square mile.
The population of Mississippi County has declined 18.0% since 2010 (14,333 → 11,750), a -1.41% annualized rate.
The median household income in Mississippi County, Missouri is $46,258, with mean (average) household income of $58,113 and per-capita income of $22,547. 18.9% of residents live below the federal poverty level.
In Mississippi County, the largest racial and ethnic groups are White (71.9%), Black or African American (22.7%), Hispanic or Latino (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Mississippi County, Missouri is 42.2 years. Residents are 47.1% female and 52.9% male.
The median home value in Mississippi County is $100,300 and median monthly rent is $782. 60.9% of occupied housing units are owner-occupied. The county has 5,282 total housing units, 13.7% of which are vacant.
The largest employment sector in Mississippi County, Missouri is professional, scientific, and management services, employing 24.3% of workers. The unemployment rate is 1.8%.
Kansas City is among the largest cities associated with Mississippi County, Missouri, with a population of 508,233.
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Full rankings of Missouri counties
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.