County Maps US

Benton County, Missouri

A county in Missouri, ranked 54 of 115 by population.

CountyFIPS 29015

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

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Population
20,536
+1,105 (+5.7%) since 2020
Land area
704
square miles. A further 6.4% of the total area is water
Population density
29.2
people per square mile, computed rather than published
County seat
Warsaw
Seat of county government.
Established
1835
190 years ago
Largest city
Warsaw city
Population 2,338.

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 Benton 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 Benton 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 636 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 Benton 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
Population20,53654th of 1151,801st of 3,144
Land area704 sq mi25th of 1151,317th of 3,144
Population density29.2 per sq mi61st of 1151,949th of 3,144
Median household income$52,56790th of 1152,627th of 3,143

Full data for Benton County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population20,536Vintage 2025 Population Estimates
Population in 202019,431Vintage 2025 Population Estimates
2020 estimates base?19,397Vintage 2025 Population Estimates
Land area704 sq mi2025 Gazetteer Files
Water area48.5 sq mi2025 Gazetteer Files
Total area752.5 sq mi2025 Gazetteer Files
Population density?29.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$52,567American Community Survey 2020-2024 5-Year Estimates
Median home value$177,900American Community Survey 2020-2024 5-Year Estimates
Median age54.5American Community Survey 2020-2024 5-Year Estimates
Households8,573American Community Survey 2020-2024 5-Year Estimates
Housing units13,594American 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
-243
163 births, 406 deaths
Net migration
+247
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 6 areas bordering Benton 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
Pettis CountyMissouri26 mi44,254
Hickory CountyMissouri24 mi9,044
Henry CountyMissouri21 mi22,671
Morgan CountyMissouri19 mi22,418
Camden CountyMissouri15 mi44,047
St. Clair CountyMissouri11 mi9,976

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.