• county
  • FIPS 20115
  • Largest town: Hillsboro

Marion County, Kansas

Marion County had 11,670 residents in the Census Vintage 2024 estimate, on 944.3 square miles of land. It ranks 37th of 105 in Kansas by population and 20th by land area.

Population
11,670
#37 of 105 in Kansas · #2,306 in US
Area
944.3 sq mi
#20 of 105 in Kansas · #753 in US
Density
12 / sq mi
#46 of 105 in Kansas · #2,485 in US
Median household income
$62,268
#55 of 105 in Kansas · #1,619 in US

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

Marion County within Kansas. Pin: Topeka.

Measure from here

Tools and pages that start from Marion County

Marion County population, land area and income

Marion County had 11,670 residents in the Census Vintage 2024 estimate, on 944.3 square miles of land. It ranks 37th of 105 in Kansas by population and 20th by land area. That works out to 12.4 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in Kansas has 6,946 residents; Marion County is somewhat larger.

Its SAIPE 2023 median household income of $62,268 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

11,670

3144th1st

2306th of 3,144 (US)

Land area

944 sq mi

3144th1st

753rd of 3,144 (US)

Density

12.4 / sq mi

3144th1st

2485th of 3,144 (US)

Median household income

$62,268

3143rd1st

1619th of 3,143 (US)

Rank within Kansas (105)

Population

11,670

105th1st

37th of 105 (KS)

Land area

944 sq mi

105th1st

20th of 105 (KS)

Density

12.4 / sq mi

105th1st

46th of 105 (KS)

Median household income

$62,268

105th1st

55th of 105 (KS)

How Marion County's population changed since 2020

Marion County lost 117 residents between the July 2020 and July 2024 estimates, a drop of 1.0%. That ranks 50th 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, Marion County recorded 496 births and 732 deaths, a natural change of -236. Net international migration added +28 and net domestic migration, people moving to or from other US counties, came to +49. The largest single component was natural change, which removed 236 people.

11.8k202011.7k202111.8k202211.8k202311.7k2024
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
496
Deaths
732
Net international migration
+28
Net domestic migration
+49
Change, July 2023 to July 2024
-98

Where Marion County is

The Census internal point of Marion County is at 38.359600, -97.102800. It sits in UTM zone 14N. The map shades Kansas's 105 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Marion 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: Marion County internal point. Dark pin: Topeka.

Internal point

Decimal
38.359600, -97.102800
DMS
38°21'34.56"N 97°06'10.08"W
UTM
14N 665759.5E 4247418.1N
Geohash
9yffnr5uu
Plus code
86C49V5W+RV

Towns in Marion County

2 incorporated places of 1,000+ people have residents in Marion County, 4,563 people together, or 39% of the county. Each figure counts only the part of the town inside Marion County; towns marked "part" extend into another county. The largest is Hillsboro with 2,673.

  1. 01Hillsboro2,673
  2. 02Marion1,890
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Marion County

The Census 2024 county adjacency file lists 7 neighbors for Marion County. The most populous is Butler County, KS, with 69,158 residents. Distances run between Census internal points in a straight line.

Distance to Topeka and the nearest big city

Topeka is 90.3 miles ENE of Marion County's internal point in a straight line. The nearest place of 100,000 or more is Wichita, KS (population 400,991), 48.1 miles away. The nearest place of 10,000 or more is Newton, KS (population 18,320), 25.8 miles away.

Marion County FIPS code

The FIPS code of Marion County is 20115: state code 20 for Kansas plus county code 115. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $62,268.

Questions people ask

What is the population of Marion County, Kansas?

The Census Vintage 2024 estimate for July 1, 2024 is 11,670. That is down 117 people (1.0%) from the July 2020 estimate of 11,787.

What is the FIPS code of Marion County?

20115. The first two digits (20) are Kansas; the last three (115) identify the county.

What is the largest town in Marion County?

Hillsboro, with 2,673 residents inside Marion County in 2024.

Which counties border Marion County?

7 county-equivalents border it in the Census 2024 adjacency file: Butler County, KS; Saline County, KS; Harvey County, KS; McPherson County, KS; Dickinson County, KS; Morris County, KS; Chase 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.