Decatur County, Kansas Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 86th-largest in Kansas

The population of Decatur County, Kansas is 2,746 as of the 2023 American Community Survey, making it the 86th-largest county in Kansas. The median household income is $52,030, the median home value is $78,500, and the median age is 52.1.

The population of Decatur County has declined 8.2% since 2010 (2,957 → 2,716), a -0.61% annualized rate.

Decatur County within Kansas · Source: US Census TIGER/Line via us-atlas

2,746

Population

-0.61%

Annual growth

People / sq mi

$52,030

Median Income

$78,500

Median Home Value

Decatur County covers 894 sq mi of land at 3.1 people per square mile.

About Decatur County, KS

Decatur County is a county in Kansas with a population of 2,746. It ranks #86 among counties in Kansas by population. The median age is 52.1, older than the national median. The population is 52.1% male and 47.9% female.

The median household income in Decatur County is $52,030, below the US median of $74,580. 7.4% of residents live below the federal poverty level. Home values sit at a median of $78,500, with monthly rent averaging $695. The homeownership rate of 79.4% is higher than the national rate of 64.8%.

Educational attainment in Decatur County reflects 27.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 21.2% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 17.0 minutes each way.

Decatur County Population History (2010-2024)

The county of Decatur County had a population of 2,957 in 2010 and 2,716 in 2024, a -8.2% growth over 14 years. The peak was 2,957 in 2010. Average annual growth rate: -0.59%.

2,716

Population (2024)

2,957

Population (2010)

2,957

Peak (2010)

-0.59%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	2,957	-	-	estimate
2011	2,927	-30	-1.01%	estimate
2012	2,886	-41	-1.40%	estimate
2013	2,911	+25	+0.87%	estimate
2014	2,900	-11	-0.38%	estimate
2015	2,927	+27	+0.93%	estimate
2016	2,829	-98	-3.35%	estimate
2017	2,866	+37	+1.31%	estimate
2018	2,842	-24	-0.84%	estimate
2019	2,816	-26	-0.91%	estimate
2020	2,747	-69	-2.45%	estimate
2021	2,756	+9	+0.33%	estimate
2022	2,681	-75	-2.72%	estimate
2023	2,732	+51	+1.90%	estimate
2024	2,716	-16	-0.59%	estimate

Race & Ethnicity

White	92.7%
Black or African American	1.7%
Asian	0.0%
Hispanic or Latino (any race)	0.8%
Two or More Races	0.0%

Age & Sex

52.1

Median Age

47.9%

Female

52.1%

Male

29.3%

Age 65+

Age Distribution

Under 5

5.3%

5–9

5.2%

10–14

5.9%

15–19

3.8%

20–24

0.8%

25–34

13.5%

35–44

11.3%

45–54

8.0%

55–59

6.3%

60–64

10.6%

65–74

16.1%

75–84

8.2%

85+

5.0%

Children (under 15): 16.4% · Seniors (65+): 29.3%

Income & Poverty

Median household income	$52,030$-20,609 vs state
Mean household income	$71,773
Per-capita income	$36,280
Poverty rate	7.4%-0.3% vs state
Unemployment rate	2.3%
Employment-to-population	60.9%

Top Industries by Employment

Agriculture

28.0%

Professional & business services

20.4%

Manufacturing

7.3%

Public administration

6.2%

Information

5.1%

Education & health care

5.0%

Retail trade

3.9%

Construction

3.9%

The largest employment sector in Decatur County is agriculture, accounting for 28.0% of workers.

How residents commute

3.6%

Drive alone

5.5%

Carpool

64.9%

Public transit

21.2%

Work from home

17.0 min

Avg commute

Housing

$78,500$-124,900 vs state

Median home value

$695

Median rent

79.4%

Homeownership rate

1,643

Total housing units

83.6%

Occupied

16.4%

Vacant

20.6%

Renter-occupied

Social & access

92.8%

With health insurance

93.6%

With broadband internet

32.0%

Foreign-born

4.9%

Veterans (18+)

18.4%

With a disability

96.8%

Speak language other than English at home

Education

94.2%

High School+

27.8%

Bachelor's+

Largest cities in Kansas

Wichita (396,488)Overland Park (197,199)Kansas City (154,776)Olathe (143,720)Topeka (126,103)Lawrence (95,459)Shawnee (68,175)Lenexa (57,986)Manhattan (53,951)Salina (46,432)All Kansas cities →

Other counties in Kansas

Johnson County (614,764)Sedgwick County (524,810)Shawnee County (178,315)Wyandotte County (167,277)Douglas County (119,547)Leavenworth County (82,493)Riley County (71,710)Butler County (67,916)Reno County (61,693)Saline County (53,801)All Kansas counties →

Part of Kansas

Kansas demographic profile All Kansas data →

Metro areas in Kansas

Kansas City (2,202,006)Wichita (648,935)Topeka (232,724)Joplin (202,258)Manhattan (133,413)St. Joseph (120,609)Lawrence (119,547)All US metros →

County rankings

US Counties by Population Richest US Counties by Median Household Income Expensive US Counties by Home Value Educated US Counties Counties With Highest Poverty Rates Youngest US Counties by Median Age Oldest US Counties by Median Age Cheapest US Counties by Median Home Value Racially Diverse US Counties Counties With Largest Hispanic Population All rankings →

Frequently Asked Questions

Decatur County, Kansas has a population of 2,746 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 86th-largest county in Kansas. Population density is 3 people per square mile.

The population of Decatur County has declined 8.2% since 2010 (2,957 → 2,716), a -0.61% annualized rate.

The median household income in Decatur County, Kansas is $52,030, with mean (average) household income of $71,773 and per-capita income of $36,280. 7.4% of residents live below the federal poverty level.

In Decatur County, the largest racial and ethnic groups are White (92.7%), Black or African American (1.7%), Hispanic or Latino (0.8%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Decatur County, Kansas is 52.1 years. Residents are 47.9% female and 52.1% male.

The median home value in Decatur County is $78,500 and median monthly rent is $695. 79.4% of occupied housing units are owner-occupied. The county has 1,643 total housing units, 16.4% of which are vacant.

The largest employment sector in Decatur County, Kansas is agriculture, forestry, fishing, and mining, employing 28.0% of workers. The unemployment rate is 2.3%.

Wichita is among the largest cities associated with Decatur County, Kansas, with a population of 396,488.