County Maps US

Ste. Genevieve County, Missouri

A county in Missouri, ranked 59 of 115 by population.

CountyFIPS 29186

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

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Population
18,689
+209 (+1.1%) since 2020
Land area
499.2
square miles. A further 1.5% of the total area is water
Population density
37.4
people per square mile, computed rather than published
County seat
Ste. Genevieve
Seat of county government.
Established
1812
213 years ago
Largest city
Ste. Genevieve city
Population 5,065.

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 Ste. Genevieve 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 Ste. Genevieve 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 743 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 Ste. Genevieve 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
Population18,68959th of 1151,897th of 3,144
Land area499.2 sq mi83rd of 1152,084th of 3,144
Population density37.4 per sq mi49th of 1151,737th of 3,144
Median household income$66,33928th of 1151,487th of 3,143

Full data for Ste. Genevieve County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population18,689Vintage 2025 Population Estimates
Population in 202018,480Vintage 2025 Population Estimates
2020 estimates base?18,481Vintage 2025 Population Estimates
Land area499.2 sq mi2025 Gazetteer Files
Water area7.6 sq mi2025 Gazetteer Files
Total area506.8 sq mi2025 Gazetteer Files
Population density?37.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$66,339American Community Survey 2020-2024 5-Year Estimates
Median home value$222,200American Community Survey 2020-2024 5-Year Estimates
Median age43.3American Community Survey 2020-2024 5-Year Estimates
Households7,137American Community Survey 2020-2024 5-Year Estimates
Housing units8,326American 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
-24
188 births, 212 deaths
Net migration
+112
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 5 areas bordering Ste. Genevieve 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
St. Francois CountyMissouri43 mi67,809
Randolph CountyIllinois29 mi29,921
Perry CountyMissouri17 mi19,093
Jefferson CountyMissouri13 mi233,132
Monroe CountyIllinois3.9 mi34,840

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.