County Maps US

Ralls County, Missouri

A county in Missouri, ranked 83 of 115 by population.

CountyFIPS 29173

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

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Population
10,444
+92 (+0.9%) since 2020
Land area
469.8
square miles. A further 2.9% of the total area is water
Population density
22.2
people per square mile, computed rather than published
County seat
New London
Seat of county government.
Established
1820
205 years ago
Largest city
New London city
Population 981.

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 Ralls 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 Ralls 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 716 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 Ralls 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
Population10,44483rd of 1152,382nd of 3,144
Land area469.8 sq mi91st of 1152,192nd of 3,144
Population density22.2 per sq mi75th of 1152,158th of 3,144
Median household income$65,38833rd of 1151,605th of 3,143

Full data for Ralls County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population10,444Vintage 2025 Population Estimates
Population in 202010,352Vintage 2025 Population Estimates
2020 estimates base?10,351Vintage 2025 Population Estimates
Land area469.8 sq mi2025 Gazetteer Files
Water area14.0 sq mi2025 Gazetteer Files
Total area483.8 sq mi2025 Gazetteer Files
Population density?22.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$65,388American Community Survey 2020-2024 5-Year Estimates
Median home value$168,200American Community Survey 2020-2024 5-Year Estimates
Median age45.9American Community Survey 2020-2024 5-Year Estimates
Households3,970American Community Survey 2020-2024 5-Year Estimates
Housing units5,056American 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
-45
85 births, 130 deaths
Net migration
+39
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 Ralls 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
Pike CountyMissouri28 mi17,955
Marion CountyMissouri24 mi28,525
Monroe CountyMissouri22 mi8,959
Audrain CountyMissouri16 mi24,528
Pike CountyIllinois9.4 mi14,231

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.