County Maps US

Miami County, Kansas

A county in Kansas, ranked 14 of 105 by population.

CountyFIPS 20121

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

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Population
36,240
+2,016 (+5.9%) since 2020
Land area
575.9
square miles. A further 2.4% of the total area is water
Population density
62.9
people per square mile, computed rather than published
County seat
Paola
Seat of county government.
Established
1855
170 years ago
Largest city
Paola city
Population 5,880.

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 Miami 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 Miami County, Kansas 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 786 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 Miami County ranks

Position among the 105 counties of Kansas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn KansasNationally
Population36,24014th of 1051,292nd of 3,144
Land area575.9 sq mi88th of 1051,720th of 3,144
Population density62.9 per sq mi11th of 1051,276th of 3,144
Median household income$89,0005th of 105329th of 3,143

Full data for Miami County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population36,240Vintage 2025 Population Estimates
Population in 202034,224Vintage 2025 Population Estimates
2020 estimates base?34,191Vintage 2025 Population Estimates
Land area575.9 sq mi2025 Gazetteer Files
Water area14.4 sq mi2025 Gazetteer Files
Total area590.3 sq mi2025 Gazetteer Files
Population density?62.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$89,000American Community Survey 2020-2024 5-Year Estimates
Median home value$287,700American Community Survey 2020-2024 5-Year Estimates
Median age41.7American Community Survey 2020-2024 5-Year Estimates
Households13,738American Community Survey 2020-2024 5-Year Estimates
Housing units14,262American 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
+66
417 births, 351 deaths
Net migration
+376
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 Miami 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
Linn CountyKansas25 mi9,950
Franklin CountyKansas25 mi26,299
Johnson CountyKansas24 mi636,906
Cass CountyMissouri18 mi115,859
Bates CountyMissouri6.1 mi16,512
Anderson CountyKansasa single point8,018
Douglas CountyKansasa single point120,920

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 105 counties of Kansas

Open the interactive Kansas county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.