County Maps US

Polk County, Missouri

A county in Missouri, ranked 35 of 115 by population.

CountyFIPS 29167

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

Download SVGFull Missouri map downloads

Population
33,604
+1,989 (+6.3%) since 2020
Land area
635.5
square miles. A further 1.1% of the total area is water
Population density
52.9
people per square mile, computed rather than published
County seat
Bolivar
Seat of county government.
Established
1835
190 years ago
Largest city
Bolivar city
Population 11,994.

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 Polk 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 Polk 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 716 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 Polk 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
Population33,60435th of 1151,355th of 3,144
Land area635.5 sq mi44th of 1151,502nd of 3,144
Population density52.9 per sq mi35th of 1151,418th of 3,144
Median household income$59,64759th of 1152,109th of 3,143

Full data for Polk County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population33,604Vintage 2025 Population Estimates
Population in 202031,615Vintage 2025 Population Estimates
2020 estimates base?31,520Vintage 2025 Population Estimates
Land area635.5 sq mi2025 Gazetteer Files
Water area6.9 sq mi2025 Gazetteer Files
Total area642.4 sq mi2025 Gazetteer Files
Population density?52.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$59,647American Community Survey 2020-2024 5-Year Estimates
Median home value$205,800American Community Survey 2020-2024 5-Year Estimates
Median age38.1American Community Survey 2020-2024 5-Year Estimates
Households12,059American Community Survey 2020-2024 5-Year Estimates
Housing units13,482American 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
+39
407 births, 368 deaths
Net migration
+355
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 Polk 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
Dallas CountyMissouri28 mi18,025
Greene CountyMissouri24 mi309,286
Hickory CountyMissouri22 mi9,044
Cedar CountyMissouri19 mi14,888
Dade CountyMissouri10 mi7,804
St. Clair CountyMissouri3.0 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.