• county
  • FIPS 20121
  • Largest town: Paola

Miami County, Kansas

Miami County had 35,737 residents in the Census Vintage 2024 estimate, on 575.9 square miles of land. It ranks 13th of 105 in Kansas by population and 88th by land area.

Population
35,737
#13 of 105 in Kansas · #1,296 in US
Area
575.9 sq mi
#88 of 105 in Kansas · #1,720 in US
Density
62 / sq mi
#12 of 105 in Kansas · #1,278 in US
Median household income
$85,620
#2 of 105 in Kansas · #320 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Miami County within Kansas. Pin: Topeka.

Measure from here

Tools and pages that start from Miami County

Miami County population, land area and income

Miami County had 35,737 residents in the Census Vintage 2024 estimate, on 575.9 square miles of land. It ranks 13th of 105 in Kansas by population and 88th by land area. That works out to 62.1 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Kansas has 6,946 residents, so Miami County is 5.1 times that size.

Its SAIPE 2023 median household income of $85,620 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

35,737

3144th1st

1296th of 3,144 (US)

Land area

576 sq mi

3144th1st

1720th of 3,144 (US)

Density

62.1 / sq mi

3144th1st

1278th of 3,144 (US)

Median household income

$85,620

3143rd1st

320th of 3,143 (US)

Rank within Kansas (105)

Population

35,737

105th1st

13th of 105 (KS)

Land area

576 sq mi

105th1st

88th of 105 (KS)

Density

62.1 / sq mi

105th1st

12th of 105 (KS)

Median household income

$85,620

105th1st

2nd of 105 (KS)

How Miami County's population changed since 2020

Miami County gained 1,518 residents between the July 2020 and July 2024 estimates, a rise of 4.4%. That ranks 2nd of 105 in Kansas for growth. The median Kansas county changed by -1.0%, and the state as a whole by +1.1%.

Since the April 2020 estimates base, Miami County recorded 1,437 births and 1,519 deaths, a natural change of -82. Net international migration added +59 and net domestic migration, people moving to or from other US counties, came to +1,575. The largest single component was domestic migration, which added 1,575 people.

34.2k202034.6k202134.8k202235.3k202335.7k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,437
Deaths
1,519
Net international migration
+59
Net domestic migration
+1,575
Change, July 2023 to July 2024
+404

Where Miami County is

The Census internal point of Miami County is at 38.566800, -94.833000. It sits in UTM zone 15N. The map shades Kansas's 105 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Miami County outlined. Dots are towns of 1,000+ people with residents in it.

Harper County: -1.0%Phillips County: -4.6%Seward County: -2.7%Grant County: -3.1%Pawnee County: -3.8%Haskell County: -4.5%Ness County: -2.3%Logan County: -1.8%Wichita County: -3.6%Greenwood County: -1.7%Stanton County: -0.7%Edwards County: -5.3%Gray County: +1.6%Franklin County: +1.0%Saline County: -1.5%Allen County: -0.9%Lyon County: +1.3%Cloud County: -3.3%Brown County: -3.6%Rice County: -1.1%Lincoln County: -0.6%Osborne County: -4.0%Rooks County: -2.8%Russell County: -0.8%Jefferson County: +0.0%Jewell County: -1.0%Lane County: -5.6%Sheridan County: -1.9%Gove County: -2.1%Trego County: -1.1%Montgomery County: -3.0%Sumner County: +0.1%Graham County: -1.5%Marion County: -1.0%Washington County: +0.8%Stevens County: -4.0%Kiowa County: -0.7%Mitchell County: +0.4%Cheyenne County: +1.3%Ellis County: +0.2%Rush County: -4.6%Scott County: -4.3%Comanche County: +0.7%Wallace County: -2.6%Nemaha County: -2.0%Linn County: +2.6%Ford County: -0.4%Dickinson County: +1.4%Ellsworth County: -0.9%Labette County: -2.3%Cowley County: -1.0%Neosho County: -2.2%Wilson County: -2.2%Thomas County: -1.7%Greeley County: -9.6%Osage County: -0.0%Finney County: +0.1%Kearny County: -3.8%Kingman County: -6.4%Republic County: -1.3%Ottawa County: +2.1%Smith County: -0.5%Crawford County: -0.1%Elk County: -1.5%Miami County: +4.4%Hodgeman County: -3.7%Morris County: -1.7%Morton County: -8.1%Harvey County: -1.0%Meade County: -4.2%Sedgwick County: +2.1%Geary County: -3.6%Woodson County: +0.4%Bourbon County: +0.6%Chase County: -2.6%Pratt County: -0.0%Reno County: -0.8%Chautauqua County: -1.2%Norton County: -2.1%Marshall County: -0.7%Doniphan County: +1.4%Cherokee County: -0.9%Barton County: -2.3%Riley County: +0.8%Butler County: +2.6%Stafford County: -3.7%Anderson County: +0.9%Sherman County: -1.8%Rawlins County: -5.5%Pottawatomie County: +5.7%McPherson County: +0.5%Coffey County: -0.7%Hamilton County: +0.0%Atchison County: -0.5%Shawnee County: -0.4%Leavenworth County: +3.3%Jackson County: +2.2%Clark County: -5.3%Douglas County: +2.7%Clay County: -1.9%Barber County: -3.2%Johnson County: +3.5%Wabaunsee County: +3.2%Decatur County: -1.1%Wyandotte County: +0.3%
Change 2020 to 2024
  1. < -3.6%
  2. < -1.7%
  3. < -0.7%
  4. < +0.6%
  5. ≥ +0.6%
no data

Orange pin: Miami County internal point. Dark pin: Topeka.

Internal point

Decimal
38.566800, -94.833000
DMS
38°34'0.48"N 94°49'58.80"W
UTM
15N 340307.9E 4270298.5N
Geohash
9yue6hbey
Plus code
86C7H588+PR

Towns in Miami County

4 incorporated places of 1,000+ people have residents in Miami County, 19,131 people together, or 54% of the county. Each figure counts only the part of the town inside Miami County; towns marked "part" extend into another county. The largest is Paola with 5,835.

  1. 01Paola5,835
  2. 02Louisburg5,266
  3. 03Osawatomie4,187
  4. 04Spring Hill (part)3,843
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Miami County

The Census 2024 county adjacency file lists 7 neighbors for Miami County, including 2 across a state line. The most populous is Johnson County, KS, with 632,276 residents. Distances run between Census internal points in a straight line.

Distance to Topeka and the nearest big city

Topeka is 56.3 miles NW of Miami County's internal point in a straight line. The nearest place of 100,000 or more is Olathe, KS (population 149,035), 21.8 miles away. The nearest place of 10,000 or more is Spring Hill, KS (population 10,070), 13.1 miles away.

Miami County FIPS code

The FIPS code of Miami County is 20121: state code 20 for Kansas plus county code 121. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $85,620.

Questions people ask

What is the population of Miami County, Kansas?

The Census Vintage 2024 estimate for July 1, 2024 is 35,737. That is up 1,518 people (4.4%) from the July 2020 estimate of 34,219.

What is the FIPS code of Miami County?

20121. The first two digits (20) are Kansas; the last three (121) identify the county.

What is the largest town in Miami County?

Paola, with 5,835 residents inside Miami County in 2024.

Which counties border Miami County?

7 county-equivalents border it in the Census 2024 adjacency file: Johnson County, KS; Douglas County, KS; Cass County, MO; Franklin County, KS; Bates County, MO; Linn County, KS; Anderson County, KS.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.