Cass County, Indiana Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 40th-largest in Indiana
The population of Cass County, Indiana is 37,703 as of the 2023 American Community Survey, making it the 40th-largest county in Indiana. The median household income is $56,525, the median home value is $118,700, and the median age is 41.1.
The population of Cass County has declined 3.7% since 2010 (38,985 → 37,559), a -0.27% annualized rate.
37,703
Population
-0.27%
Annual growth
91
People / sq mi
$56,525
Median Income
$118,700
Median Home Value
Cass County covers 412 sq mi of land at 91.5 people per square mile.
About Cass County, IN
Cass County is a county in Indiana with a population of 37,703. It ranks #40 among counties in Indiana by population. The median age is 41.1, older than the national median. The population is 50.0% male and 50.0% female.
The median household income in Cass County is $56,525, below the US median of $74,580. 9.2% of residents live below the federal poverty level. Home values sit at a median of $118,700, with monthly rent averaging $778. The homeownership rate of 75.3% is higher than the national rate of 64.8%.
Educational attainment in Cass County reflects 15.6% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 3.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.4 minutes each way.
Cass County Population History (2010-2024)
The county of Cass County had a population of 38,985 in 2010 and 37,559 in 2024, a -3.7% growth over 14 years. The peak was 38,985 in 2010. Average annual growth rate: -0.26%.
37,559
Population (2024)
38,985
Population (2010)
38,985
Peak (2010)
-0.26%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 38,985 |
| 2011 | 38,917 |
| 2012 | 38,771 |
| 2013 | 38,580 |
| 2014 | 38,482 |
| 2015 | 38,079 |
| 2016 | 37,927 |
| 2017 | 37,827 |
| 2018 | 37,885 |
| 2019 | 37,610 |
| 2020 | 37,794 |
| 2021 | 37,573 |
| 2022 | 37,670 |
| 2023 | 37,802 |
| 2024 | 37,559 |
Race & Ethnicity
| White | 80.9% |
| Black or African American | 1.3% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.6% |
| Two or More Races | 0.0% |
Age & Sex
41.1
Median Age
50.0%
Female
50.0%
Male
18.1%
Age 65+
Age Distribution
Children (under 15): 18.7% · Seniors (65+): 18.1%
Income & Poverty
| Median household income | $56,525$-13,526 vs state |
| Mean household income | $70,904 |
| Per-capita income | $29,370 |
| Poverty rate | 9.2%+0.8% vs state |
| Unemployment rate | 2.1% |
| Employment-to-population | 60.5% |
Top Industries by Employment
The largest employment sector in Cass County is manufacturing, accounting for 27.4% of workers.
How residents commute
0.2%
Drive alone
1.2%
Carpool
81.8%
Public transit
3.4%
Work from home
21.4 min
Avg commute
Housing
$118,700$-82,900 vs state
Median home value
$778
Median rent
75.3%
Homeownership rate
16,389
Total housing units
91.1%
Occupied
8.9%
Vacant
24.7%
Renter-occupied
Social & access
93.1%
With health insurance
92.0%
With broadband internet
19.2%
Foreign-born
7.5%
Veterans (18+)
16.8%
With a disability
84.0%
Speak language other than English at home
Education
85.8%
High School+
15.6%
Bachelor's+
Largest cities in Indiana
Other counties in Indiana
Part of Indiana
Metro areas in Indiana
County rankings
Frequently Asked Questions
Cass County, Indiana has a population of 37,703 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 40th-largest county in Indiana. Population density is 91 people per square mile.
The population of Cass County has declined 3.7% since 2010 (38,985 → 37,559), a -0.27% annualized rate.
The median household income in Cass County, Indiana is $56,525, with mean (average) household income of $70,904 and per-capita income of $29,370. 9.2% of residents live below the federal poverty level.
In Cass County, the largest racial and ethnic groups are White (80.9%), Hispanic or Latino (1.6%), Black or African American (1.3%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Cass County, Indiana is 41.1 years. Residents are 50.0% female and 50.0% male.
The median home value in Cass County is $118,700 and median monthly rent is $778. 75.3% of occupied housing units are owner-occupied. The county has 16,389 total housing units, 8.9% of which are vacant.
The largest employment sector in Cass County, Indiana is manufacturing, employing 27.4% of workers. The unemployment rate is 2.1%.
Indianapolis is among the largest cities associated with Cass County, Indiana, with a population of 882,043.
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Full rankings of Indiana counties
Statewide data for Indiana
Population, race, income, age, and trends across Indiana
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.