• county
  • FIPS 20193
  • Largest town: Colby

Thomas County, Kansas

Thomas County had 7,802 residents in the Census Vintage 2024 estimate, on 1,074.7 square miles of land. It ranks 49th of 105 in Kansas by population and 10th by land area.

Population
7,802
#49 of 105 in Kansas · #2,590 in US
Area
1,074.7 sq mi
#10 of 105 in Kansas · #596 in US
Density
7.3 / sq mi
#59 of 105 in Kansas · #2,675 in US
Median household income
$69,774
#18 of 105 in Kansas · #1,023 in US

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

Thomas County within Kansas. Pin: Topeka.

Measure from here

Tools and pages that start from Thomas County

Thomas County population, land area and income

Thomas County had 7,802 residents in the Census Vintage 2024 estimate, on 1,074.7 square miles of land. It ranks 49th of 105 in Kansas by population and 10th by land area. That works out to 7.3 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; Thomas County is somewhat larger.

Its SAIPE 2023 median household income of $69,774 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

7,802

3144th1st

2590th of 3,144 (US)

Land area

1,075 sq mi

3144th1st

596th of 3,144 (US)

Density

7.3 / sq mi

3144th1st

2675th of 3,144 (US)

Median household income

$69,774

3143rd1st

1023rd of 3,143 (US)

Rank within Kansas (105)

Population

7,802

105th1st

49th of 105 (KS)

Land area

1,075 sq mi

105th1st

10th of 105 (KS)

Density

7.3 / sq mi

105th1st

59th of 105 (KS)

Median household income

$69,774

105th1st

18th of 105 (KS)

How Thomas County's population changed since 2020

Thomas County lost 131 residents between the July 2020 and July 2024 estimates, a drop of 1.7%. That ranks 62nd 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, Thomas County recorded 473 births and 380 deaths, a natural change of +93. Net international migration added +149 and net domestic migration, people moving to or from other US counties, came to -375. The largest single component was domestic migration, which removed 375 people.

7,93320207,95020217,88220227,85820237,8022024
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
473
Deaths
380
Net international migration
+149
Net domestic migration
-375
Change, July 2023 to July 2024
-56

Where Thomas County is

The Census internal point of Thomas County is at 39.357700, -101.083400. 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 Thomas 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: Thomas County internal point. Dark pin: Topeka.

Internal point

Decimal
39.357700, -101.083400
DMS
39°21'27.72"N 101°05'0.24"W
UTM
14N 320498.8E 4358542.3N
Geohash
9ybpguc74
Plus code
85FW9W58+3J

Towns in Thomas County

2 incorporated places of 1,000+ people have residents in Thomas County, 5,584 people together, or 72% of the county. Each figure counts only the part of the town inside Thomas County; towns marked "part" extend into another county. The largest is Colby with 5,539.

  1. 01Colby5,539
  2. 02Oakley (part)45
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Thomas County

The Census 2024 county adjacency file lists 6 neighbors for Thomas County. The most populous is Sherman County, KS, with 5,796 residents. Distances run between Census internal points in a straight line.

Distance to Topeka and the nearest big city

Topeka is 290.2 miles E of Thomas County's internal point in a straight line. The nearest place of 100,000 or more is Aurora, CO (population 403,130), 195.3 miles away. The nearest place of 10,000 or more is Garden City, KS (population 27,996), 96.3 miles away.

Thomas County FIPS code

The FIPS code of Thomas County is 20193: state code 20 for Kansas plus county code 193. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $69,774.

Questions people ask

What is the population of Thomas County, Kansas?

The Census Vintage 2024 estimate for July 1, 2024 is 7,802. That is down 131 people (1.7%) from the July 2020 estimate of 7,933.

What is the FIPS code of Thomas County?

20193. The first two digits (20) are Kansas; the last three (193) identify the county.

What is the largest town in Thomas County?

Colby, with 5,539 residents inside Thomas County in 2024.

Which counties border Thomas County?

6 county-equivalents border it in the Census 2024 adjacency file: Sherman County, KS; Decatur County, KS; Logan County, KS; Gove County, KS; Rawlins County, KS; Sheridan 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.