• county
  • FIPS 20103
  • Largest town: Leavenworth

Leavenworth County, Kansas

Leavenworth County had 84,670 residents in the Census Vintage 2024 estimate, on 463.4 square miles of land. It ranks 6th of 105 in Kansas by population and 100th by land area.

Population
84,670
#6 of 105 in Kansas · #692 in US
Area
463.4 sq mi
#100 of 105 in Kansas · #2,218 in US
Density
183 / sq mi
#6 of 105 in Kansas · #596 in US
Median household income
$83,086
#4 of 105 in Kansas · #367 in US

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

Leavenworth County within Kansas. Pin: Topeka.

Measure from here

Tools and pages that start from Leavenworth County

Leavenworth County population, land area and income

Leavenworth County had 84,670 residents in the Census Vintage 2024 estimate, on 463.4 square miles of land. It ranks 6th of 105 in Kansas by population and 100th by land area. That works out to 182.7 people per square mile, 1.9 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Kansas has 6,946 residents, so Leavenworth County is 12.2 times that size.

Its SAIPE 2023 median household income of $83,086 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

84,670

3144th1st

692nd of 3,144 (US)

Land area

463 sq mi

3144th1st

2218th of 3,144 (US)

Density

182.7 / sq mi

3144th1st

596th of 3,144 (US)

Median household income

$83,086

3143rd1st

367th of 3,143 (US)

Rank within Kansas (105)

Population

84,670

105th1st

6th of 105 (KS)

Land area

463 sq mi

105th1st

100th of 105 (KS)

Density

182.7 / sq mi

105th1st

6th of 105 (KS)

Median household income

$83,086

105th1st

4th of 105 (KS)

How Leavenworth County's population changed since 2020

Leavenworth County gained 2,709 residents between the July 2020 and July 2024 estimates, a rise of 3.3%. That ranks 4th 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, Leavenworth County recorded 3,798 births and 3,204 deaths, a natural change of +594. Net international migration added +684 and net domestic migration, people moving to or from other US counties, came to +1,456. The largest single component was domestic migration, which added 1,456 people.

82.0k202082.4k202182.9k202283.7k202384.7k2024
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
3,798
Deaths
3,204
Net international migration
+684
Net domestic migration
+1,456
Change, July 2023 to July 2024
+935

Where Leavenworth County is

The Census internal point of Leavenworth County is at 39.189500, -95.039000. 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 Leavenworth 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: Leavenworth County internal point. Dark pin: Topeka.

Internal point

Decimal
39.189500, -95.039000
DMS
39°11'22.20"N 95°02'20.40"W
UTM
15N 323903.8E 4339786.4N
Geohash
9yuqvq4xq
Plus code
86F65XQ6+RC

Towns in Leavenworth County

5 incorporated places of 1,000+ people have residents in Leavenworth County, 62,884 people together, or 74% of the county. Each figure counts only the part of the town inside Leavenworth County; towns marked "part" extend into another county. The largest is Leavenworth with 37,370.

  1. 01Leavenworth37,370
  2. 02Lansing11,316
  3. 03Basehor7,996
  4. 04Tonganoxie6,195
  5. 05Bonner Springs (part)7
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Leavenworth County

The Census 2024 county adjacency file lists 6 neighbors for Leavenworth County, including 1 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 35.6 miles WSW of Leavenworth County's internal point in a straight line. The nearest place of 100,000 or more is Kansas City, KS (population 156,752), 16.6 miles away. The nearest place of 10,000 or more is Lansing, KS (population 11,316), 8.4 miles away.

Leavenworth County FIPS code

The FIPS code of Leavenworth County is 20103: state code 20 for Kansas plus county code 103. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $83,086.

Questions people ask

What is the population of Leavenworth County, Kansas?

The Census Vintage 2024 estimate for July 1, 2024 is 84,670. That is up 2,709 people (3.3%) from the July 2020 estimate of 81,961.

What is the FIPS code of Leavenworth County?

20103. The first two digits (20) are Kansas; the last three (103) identify the county.

What is the largest town in Leavenworth County?

Leavenworth, with 37,370 residents inside Leavenworth County in 2024.

Which counties border Leavenworth County?

6 county-equivalents border it in the Census 2024 adjacency file: Johnson County, KS; Wyandotte County, KS; Douglas County, KS; Platte County, MO; Jefferson County, KS; Atchison 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.