Cass County, Missouri Population 2026

Updated April 2026 · US Census ACS 2023 5-Year Estimates · 10th-largest in Missouri

The population of Cass County, Missouri is 109,393 as of the 2023 American Community Survey, making it the 10th-largest county in Missouri. The median household income is $87,413, the median home value is $269,000, and the median age is 40.1.

The population of Cass County has grown 14.2% since 2010 (99,756 → 113,873), a +0.95% annualized rate.

Cass County within Missouri · Source: US Census TIGER/Line via us-atlas

109,393

Population

+0.95%

Annual growth

157

People / sq mi

$87,413

Median Income

$269,000

Median Home Value

Cass County covers 697 sq mi of land at 157.0 people per square mile.

About Cass County, MO

Cass County is a county in Missouri with a population of 109,393. It ranks #10 among counties in Missouri by population. The median age is 40.1, older than the national median. The population is 49.1% male and 50.9% female.

The median household income in Cass County is $87,413, above the US median of $74,580. 4.7% of residents live below the federal poverty level. Home values sit at a median of $269,000, with monthly rent averaging $1,147. The homeownership rate of 75.9% is higher than the national rate of 64.8%.

Educational attainment in Cass County reflects 28.8% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 12.3% of workers primarily work from home, similar to the national work-from-home rate of 14.2%. The average commute is 28.8 minutes each way.

Cass County Population History (2010-2024)

The county of Cass County had a population of 99,756 in 2010 and 113,873 in 2024, a 14.2% growth over 14 years. The peak was 113,873 in 2024. Average annual growth rate: 0.95%.

113,873

Population (2024)

99,756

Population (2010)

113,873

Peak (2024)

0.95%

Avg Annual Growth

Year	Population	Change	Annual %	Source
2010	99,756	-	-	estimate
2011	100,017	+261	+0.26%	estimate
2012	100,458	+441	+0.44%	estimate
2013	100,712	+254	+0.25%	estimate
2014	100,872	+160	+0.16%	estimate
2015	101,389	+517	+0.51%	estimate
2016	102,645	+1,256	+1.24%	estimate
2017	103,502	+857	+0.83%	estimate
2018	104,753	+1,251	+1.21%	estimate
2019	105,731	+978	+0.93%	estimate
2020	108,162	+2,431	+2.30%	estimate
2021	109,792	+1,630	+1.51%	estimate
2022	110,345	+553	+0.50%	estimate
2023	111,695	+1,350	+1.22%	estimate
2024	113,873	+2,178	+1.95%	estimate

Race & Ethnicity

White	85.6%
Black or African American	4.5%
Asian	0.0%
Hispanic or Latino (any race)	1.7%
Two or More Races	0.0%

Age & Sex

40.1

Median Age

50.9%

Female

49.1%

Male

17.5%

Age 65+

Age Distribution

Under 5

5.7%

5–9

6.5%

10–14

7.2%

15–19

6.6%

20–24

5.4%

25–34

11.9%

35–44

12.9%

45–54

12.5%

55–59

7.6%

60–64

6.3%

65–74

10.0%

75–84

5.4%

85+

2.1%

Children (under 15): 19.4% · Seniors (65+): 17.5%

Income & Poverty

Median household income	$87,413+$18,493 vs state
Mean household income	$105,071
Per-capita income	$41,075
Poverty rate	4.7%-3.7% vs state
Unemployment rate	3.1%
Employment-to-population	63.8%

Top Industries by Employment

Professional & business services

20.9%

Finance & real estate

10.1%

Manufacturing

9.8%

Construction

9.5%

Information

9.0%

Education & health care

7.1%

Retail trade

6.4%

Arts, entertainment & food

4.8%

The largest employment sector in Cass County is professional & business services, accounting for 20.9% of workers.

How residents commute

0.0%

Drive alone

0.9%

Carpool

78.9%

Public transit

12.3%

Work from home

28.8 min

Avg commute

Housing

$269,000+$53,400 vs state

Median home value

$1,147

Median rent

75.9%

Homeownership rate

44,928

Total housing units

94.2%

Occupied

5.8%

Vacant

24.1%

Renter-occupied

Social & access

92.2%

With health insurance

95.7%

With broadband internet

35.7%

Foreign-born

8.5%

Veterans (18+)

13.4%

With a disability

96.7%

Speak language other than English at home

Education

93.7%

High School+

28.8%

Bachelor's+

Largest cities in Missouri

Kansas City (508,233)St. Louis (293,109)Springfield (169,432)Columbia (127,200)Independence (121,944)Lee's Summit (102,583)O'Fallon (92,697)St. Joseph (71,542)St. Charles (71,048)Blue Springs (59,416)All Missouri cities →

Other counties in Missouri

St. Louis County (996,618)Jackson County (717,021)St. Charles County (409,830)Greene County (301,121)St. Louis city (293,109)Clay County (255,566)Jefferson County (228,227)Boone County (185,874)Jasper County (123,532)Platte County (108,751)All Missouri counties →

Part of Missouri

Missouri demographic profile All Missouri data →

Metro areas in Missouri

St. Louis (2,809,414)Kansas City (2,202,006)Springfield (481,671)Columbia (212,850)Joplin (202,258)Jefferson City (150,147)St. Joseph (120,609)Cape Girardeau (97,813)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

Cass County, Missouri has a population of 109,393 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 10th-largest county in Missouri. Population density is 157 people per square mile.

The population of Cass County has grown 14.2% since 2010 (99,756 → 113,873), a +0.95% annualized rate.

The median household income in Cass County, Missouri is $87,413, with mean (average) household income of $105,071 and per-capita income of $41,075. 4.7% of residents live below the federal poverty level.

In Cass County, the largest racial and ethnic groups are White (85.6%), Black or African American (4.5%), Hispanic or Latino (1.7%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.

The median age in Cass County, Missouri is 40.1 years. Residents are 50.9% female and 49.1% male.

The median home value in Cass County is $269,000 and median monthly rent is $1,147. 75.9% of occupied housing units are owner-occupied. The county has 44,928 total housing units, 5.8% of which are vacant.

The largest employment sector in Cass County, Missouri is professional, scientific, and management services, employing 20.9% of workers. The unemployment rate is 3.1%.

Kansas City is among the largest cities associated with Cass County, Missouri, with a population of 508,233.