County Maps US

Boone County, Missouri

A county in Missouri, ranked 8 of 115 by population.

CountyFIPS 29019

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

Download SVGFull Missouri map downloads

Population
191,746
+7,686 (+4.2%) since 2020
Land area
685.6
square miles. A further 0.8% of the total area is water
Population density
280
people per square mile, computed rather than published
County seat
Columbia
Seat of county government.
Established
1820
205 years ago
Largest city
Columbia city
Population 130,851.

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 Boone 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 Boone 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 512 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 Boone 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
Population191,7468th of 115371st of 3,144
Land area685.6 sq mi31st of 1151,368th of 3,144
Population density280 per sq mi8th of 115462nd of 3,144
Median household income$72,75817th of 115990th of 3,143

Full data for Boone County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population191,746Vintage 2025 Population Estimates
Population in 2020184,060Vintage 2025 Population Estimates
2020 estimates base?183,614Vintage 2025 Population Estimates
Land area685.6 sq mi2025 Gazetteer Files
Water area5.5 sq mi2025 Gazetteer Files
Total area691 sq mi2025 Gazetteer Files
Population density?280 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$72,758American Community Survey 2020-2024 5-Year Estimates
Median home value$272,800American Community Survey 2020-2024 5-Year Estimates
Median age32.7American Community Survey 2020-2024 5-Year Estimates
Households76,562American Community Survey 2020-2024 5-Year Estimates
Housing units81,675American 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
+525
1,829 births, 1,304 deaths
Net migration
+306
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 Boone 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
Callaway CountyMissouri49 mi45,765
Audrain CountyMissouri23 mi24,528
Howard CountyMissouri22 mi10,180
Moniteau CountyMissouri17 mi15,428
Cole CountyMissouri15 mi77,908
Randolph CountyMissouri6.2 mi24,513
Cooper CountyMissouri4.7 mi17,136

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.