Cass County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 58th-largest in Iowa
The population of Cass County, Iowa is 13,115 as of the 2023 American Community Survey, making it the 58th-largest county in Iowa. The median household income is $61,657, the median home value is $133,300, and the median age is 44.0.
The population of Cass County has declined 6.5% since 2010 (13,927 → 13,024), a -0.48% annualized rate.
13,115
Population
-0.48%
Annual growth
23
People / sq mi
$61,657
Median Income
$133,300
Median Home Value
Cass County covers 564 sq mi of land at 23.2 people per square mile.
About Cass County, IA
The poverty rate is what most separates Cass County from the typical county: 13.3% of residents live below the federal poverty line, against 12.4% nationally. With 13,115 residents, Cass County is a county in Iowa.
Household earnings are middling, with a median of $61,657 — below the US median of $78,538. Roughly 13.3% of residents fall below the poverty line, above the national 12.4%. Homes are comparatively cheap — a median value of $133,300, with typical rent around $769.
Degree attainment is mid-range for US counties: 21.6% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 9.1%, and the average commute runs about 16 minutes each way.
The elevated poverty rate is the context for the rest of the profile in Cass County: it pulls on median income, housing tenure, and the share of residents with a college degree.
Cass County Population History (2010-2024)
The county of Cass County had a population of 13,927 in 2010 and 13,024 in 2024, a -6.5% growth over 14 years. The peak was 13,927 in 2010. Average annual growth rate: -0.47%.
13,024
Population (2024)
13,927
Population (2010)
13,927
Peak (2010)
-0.47%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 13,927 |
| 2011 | 13,762 |
| 2012 | 13,697 |
| 2013 | 13,569 |
| 2014 | 13,394 |
| 2015 | 13,354 |
| 2016 | 13,198 |
| 2017 | 13,155 |
| 2018 | 12,959 |
| 2019 | 12,822 |
| 2020 | 13,115 |
| 2021 | 13,085 |
| 2022 | 13,125 |
| 2023 | 13,131 |
| 2024 | 13,024 |
Race & Ethnicity
| White | 96.1% |
| Black or African American | 0.9% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.3% |
Age & Sex
44.0
Median Age
50.4%
Female
49.6%
Male
23.1%
Age 65+
Age Distribution
Children (under 15): 18.4% · Seniors (65+): 23.1%
Income & Poverty
| Median household income | $61,657$-11,490 vs state |
| Mean household income | $82,873 |
| Per-capita income | $36,881 |
| Poverty rate | 13.3%+6.4% vs state |
| Unemployment rate | 0.7% |
| Employment-to-population | 63.2% |
Top Industries by Employment
The largest employment sector in Cass County is professional & business services, accounting for 22.7% of workers.
How residents commute
0.1%
Drive alone
4.3%
Carpool
78.8%
Public transit
9.1%
Work from home
15.6 min
Avg commute
Housing
$133,300$-62,600 vs state
Median home value
$769
Median rent
72.3%
Homeownership rate
6,397
Total housing units
90.5%
Occupied
9.5%
Vacant
27.7%
Renter-occupied
Social & access
95.8%
With health insurance
91.3%
With broadband internet
24.7%
Foreign-born
6.6%
Veterans (18+)
14.6%
With a disability
98.4%
Speak language other than English at home
Education
93.0%
High School+
21.6%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Cass County, Iowa has a population of 13,115 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 58th-largest county in Iowa. Population density is 23 people per square mile.
The population of Cass County has declined 6.5% since 2010 (13,927 → 13,024), a -0.48% annualized rate.
The median household income in Cass County, Iowa is $61,657, with mean (average) household income of $82,873 and per-capita income of $36,881. 13.3% of residents live below the federal poverty level.
In Cass County, the largest racial and ethnic groups are White (96.1%), Hispanic or Latino (1.1%), Black or African American (0.9%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Cass County, Iowa is 44.0 years. Residents are 50.4% female and 49.6% male.
The median home value in Cass County is $133,300 and median monthly rent is $769. 72.3% of occupied housing units are owner-occupied. The county has 6,397 total housing units, 9.5% of which are vacant.
The largest employment sector in Cass County, Iowa is professional, scientific, and management services, employing 22.7% of workers. The unemployment rate is 0.7%.
Des Moines is among the largest cities associated with Cass County, Iowa, with a population of 212,464.
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Statewide data for Iowa
Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.