Harrison County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 98th-largest in Missouri
The population of Harrison County, Missouri is 8,198 as of the 2023 American Community Survey, making it the 98th-largest county in Missouri. The median household income is $53,364, the median home value is $107,400, and the median age is 40.9.
The population of Harrison County has declined 8.7% since 2010 (8,968 → 8,186), a -0.65% annualized rate.
8,198
Population
-0.65%
Annual growth
11
People / sq mi
$53,364
Median Income
$107,400
Median Home Value
Harrison County covers 723 sq mi of land at 11.3 people per square mile.
About Harrison County, MO
Housing cost is the defining feature of Harrison County: the median home is valued at $107,400. With 8,198 residents, Harrison County is a county in Missouri.
Incomes run on the lower side: a median household income of $53,364, below the US median of $78,538. About 9.9% of residents live below the federal poverty level, below the national 12.4%. Housing is relatively affordable, with a median home value of $107,400, with typical rent around $666.
Fewer adults hold degrees here than in most comparable places — 17.6%, below the national 35.0%. Remote work is below the national 14.0% at 7.9%, and the average commute runs about 24 minutes each way.
Harrison County Population History (2010-2024)
The county of Harrison County had a population of 8,968 in 2010 and 8,186 in 2024, a -8.7% growth over 14 years. The peak was 8,968 in 2010. Average annual growth rate: -0.65%.
8,186
Population (2024)
8,968
Population (2010)
8,968
Peak (2010)
-0.65%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 8,968 |
| 2011 | 8,887 |
| 2012 | 8,731 |
| 2013 | 8,717 |
| 2014 | 8,638 |
| 2015 | 8,631 |
| 2016 | 8,587 |
| 2017 | 8,519 |
| 2018 | 8,362 |
| 2019 | 8,346 |
| 2020 | 8,157 |
| 2021 | 8,179 |
| 2022 | 8,213 |
| 2023 | 8,216 |
| 2024 | 8,186 |
Race & Ethnicity
| White | 96.0% |
| Black or African American | 0.8% |
| Asian | 0.3% |
| Hispanic or Latino (any race) | 1.3% |
| Two or More Races | 0.0% |
Age & Sex
40.9
Median Age
50.1%
Female
49.9%
Male
22.2%
Age 65+
Age Distribution
Children (under 15): 20.5% · Seniors (65+): 22.2%
Income & Poverty
| Median household income | $53,364$-15,556 vs state |
| Mean household income | $63,860 |
| Per-capita income | $25,701 |
| Poverty rate | 9.9%+1.5% vs state |
| Unemployment rate | 1.8% |
| Employment-to-population | 52.6% |
Top Industries by Employment
The largest employment sector in Harrison County is professional & business services, accounting for 28.3% of workers.
How residents commute
0.1%
Drive alone
1.2%
Carpool
80.4%
Public transit
7.9%
Work from home
23.6 min
Avg commute
Housing
$107,400$-108,200 vs state
Median home value
$666
Median rent
73.1%
Homeownership rate
4,023
Total housing units
76.2%
Occupied
23.8%
Vacant
26.9%
Renter-occupied
Social & access
92.3%
With health insurance
86.0%
With broadband internet
30.8%
Foreign-born
5.9%
Veterans (18+)
20.7%
With a disability
98.4%
Speak language other than English at home
Education
90.7%
High School+
17.6%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Harrison County, Missouri has a population of 8,198 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 98th-largest county in Missouri. Population density is 11 people per square mile.
The population of Harrison County has declined 8.7% since 2010 (8,968 → 8,186), a -0.65% annualized rate.
The median household income in Harrison County, Missouri is $53,364, with mean (average) household income of $63,860 and per-capita income of $25,701. 9.9% of residents live below the federal poverty level.
In Harrison County, the largest racial and ethnic groups are White (96.0%), Hispanic or Latino (1.3%), Black or African American (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Harrison County, Missouri is 40.9 years. Residents are 50.1% female and 49.9% male.
The median home value in Harrison County is $107,400 and median monthly rent is $666. 73.1% of occupied housing units are owner-occupied. The county has 4,023 total housing units, 23.8% of which are vacant.
The largest employment sector in Harrison County, Missouri is professional, scientific, and management services, employing 28.3% of workers. The unemployment rate is 1.8%.
Kansas City is among the largest cities associated with Harrison County, Missouri, with a population of 508,233.
Harrison County, MO Climate
Harrison County, MO has an average annual temperature of 10.7°C (51°F) and receives about 917 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.7°C
Avg Temp
917
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -5° / 23° | 24 mm |
| February | -2° / 29° | 25 mm |
| March | 5° / 40° | 62 mm |
| April | 11° / 52° | 86 mm |
| May | 17° / 62° | 115 mm |
| June | 22° / 71° | 105 mm |
| July | 25° / 76° | 112 mm |
| August | 23° / 74° | 107 mm |
| September | 19° / 66° | 110 mm |
| October | 12° / 54° | 80 mm |
| November | 4° / 39° | 55 mm |
| December | -2° / 28° | 36 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 Harrison County, MO
The most comfortable months to visit Harrison County, MO are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -10°C low). May is usually the wettest month.
Where to stay near Harrison County
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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.