County Maps US

Miller County, Missouri

A county in Missouri, ranked 42 of 115 by population.

CountyFIPS 29131

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

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Population
25,817
+1,045 (+4.2%) since 2020
Land area
592.6
square miles. A further 1.2% of the total area is water
Population density
43.6
people per square mile, computed rather than published
County seat
Tuscumbia
Seat of county government.
Established
1837
188 years ago
Largest city
Eldon city
Population 4,785.

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 Miller 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 Miller 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 782 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 Miller 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
Population25,81742nd of 1151,593rd of 3,144
Land area592.6 sq mi56th of 1151,651st of 3,144
Population density43.6 per sq mi44th of 1151,596th of 3,144
Median household income$56,73673rd of 1152,356th of 3,143

Full data for Miller County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population25,817Vintage 2025 Population Estimates
Population in 202024,772Vintage 2025 Population Estimates
2020 estimates base?24,724Vintage 2025 Population Estimates
Land area592.6 sq mi2025 Gazetteer Files
Water area7.4 sq mi2025 Gazetteer Files
Total area600 sq mi2025 Gazetteer Files
Population density?43.6 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$56,736American Community Survey 2020-2024 5-Year Estimates
Median home value$192,600American Community Survey 2020-2024 5-Year Estimates
Median age41.3American Community Survey 2020-2024 5-Year Estimates
Households9,857American Community Survey 2020-2024 5-Year Estimates
Housing units12,541American 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
-34
280 births, 314 deaths
Net migration
+169
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 Miller 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
Camden CountyMissouri29 mi44,047
Cole CountyMissouri23 mi77,908
Maries CountyMissouri20 mi8,397
Morgan CountyMissouri18 mi22,418
Pulaski CountyMissouri12 mi54,442
Moniteau CountyMissouri7.1 mi15,428
Osage CountyMissouri3.0 mi13,611

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.