County Maps US

Harrison County, Missouri

A county in Missouri, ranked 98 of 115 by population.

CountyFIPS 29081

Within Missouri
Harrison County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Bethany, the county seat, located via the 2025 Census Gazetteer.

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Population
8,281
+123 (+1.5%) since 2020
Land area
722.5
square miles. A further 0.5% of the total area is water
Population density
11.5
people per square mile, computed rather than published
County seat
Bethany
Seat of county government.
Established
1845
180 years ago
Largest city
Bethany city
Population 2,956.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Harrison County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Harrison County, Missouri from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 660 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Harrison County ranks

Position among the 115 counties of Missouri, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MissouriNationally
Population8,28198th of 1152,555th of 3,144
Land area722.5 sq mi24th of 1151,234th of 3,144
Population density11.5 per sq mi102nd of 1152,511th of 3,144
Median household income$54,36783rd of 1152,511th of 3,143

Full data for Harrison County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population8,281Vintage 2025 Population Estimates
Population in 20208,158Vintage 2025 Population Estimates
2020 estimates base?8,158Vintage 2025 Population Estimates
Land area722.5 sq mi2025 Gazetteer Files
Water area3.9 sq mi2025 Gazetteer Files
Total area726.4 sq mi2025 Gazetteer Files
Population density?11.5 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$54,367American Community Survey 2020-2024 5-Year Estimates
Median home value$109,500American Community Survey 2020-2024 5-Year Estimates
Median age41.8American Community Survey 2020-2024 5-Year Estimates
Households3,195American Community Survey 2020-2024 5-Year Estimates
Housing units4,008American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+26
130 births, 104 deaths
Net migration
+19
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 7 areas bordering Harrison County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Daviess CountyMissouri24 mi8,558
Mercer CountyMissouri22 mi3,404
Gentry CountyMissouri17 mi6,384
Worth CountyMissouri14 mi1,914
Decatur CountyIowa13 mi7,655
Ringgold CountyIowa11 mi4,642
Grundy CountyMissouri9.0 mi9,744

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 115 counties of Missouri

Open the interactive Missouri county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.