County Maps US

Lafayette County, Missouri

A county in Missouri, ranked 36 of 115 by population.

CountyFIPS 29107

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

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Population
33,531
+472 (+1.4%) since 2020
Land area
628.3
square miles. A further 1.6% of the total area is water
Population density
53.4
people per square mile, computed rather than published
County seat
Lexington
Seat of county government.
Established
1820
205 years ago
Largest city
Odessa city
Population 5,721.

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 Lafayette 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 Lafayette 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 800 by 641 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 Lafayette 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
Population33,53136th of 1151,358th of 3,144
Land area628.3 sq mi47th of 1151,532nd of 3,144
Population density53.4 per sq mi34th of 1151,411th of 3,144
Median household income$80,61210th of 115559th of 3,143

Full data for Lafayette County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population33,531Vintage 2025 Population Estimates
Population in 202033,059Vintage 2025 Population Estimates
2020 estimates base?32,989Vintage 2025 Population Estimates
Land area628.3 sq mi2025 Gazetteer Files
Water area10.4 sq mi2025 Gazetteer Files
Total area638.7 sq mi2025 Gazetteer Files
Population density?53.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$80,612American Community Survey 2020-2024 5-Year Estimates
Median home value$216,500American Community Survey 2020-2024 5-Year Estimates
Median age40.9American Community Survey 2020-2024 5-Year Estimates
Households12,576American Community Survey 2020-2024 5-Year Estimates
Housing units14,221American 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
-91
363 births, 454 deaths
Net migration
+192
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 Lafayette 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
Johnson CountyMissouri35 mi56,670
Ray CountyMissouri31 mi23,398
Saline CountyMissouri24 mi23,265
Carroll CountyMissouri23 mi8,417
Jackson CountyMissouri16 mi732,994
Pettis CountyMissouri1.0 mi44,254

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.