As of 2026 the population of Cass County is 116,348. The population is expected to grow to 121,970 by 2031 - a growth rate of 0.95%.
The median age of Cass County residents is 41.
The diversity index of Cass County is 38.7, meaning that there is a 39% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
The average household income in Cass County is $114,602 and projected to be $131,002 in 2031. Per capita income is $44,204, projected to be $50,887 in 2031. 4.83% of households – 5,619 – have an income of $200,000 or higher. Average net worth is $1,396,673 and the average disposable income is $87,489.
There are 47,958 housing units in Cass County; 33,315 are owner-occupied, 11,460 are rented, and 3,183 are vacant. The average home value is $384,378, with 6,740 homes built in 2010 or later, and 2,082 built in 1939 or earlier.
There are 2,900 businesses in Cass County, employing 28,955 workers and pulling from a labor force of 55,894 age 16 and above. 20,205 workers commute into Cass County from outside the county or state. Key industries for the area include:
26,380 residents both live and work in/around Cass County. The average travel time is 28.0 minutes. 5.74% people have a commute of less than 5 minutes while 3.63% commute 90 minutes or more each way. Of commuters, 42,532 drive alone, 4,459 carpool, and 12 take public transportation. 1,108 use other modes of transport such as motorcycle, bicycle, walking, etc. 7,767 residents work from home.
24,610 members of the workforce hold a high school diploma or GED. 8,212 have associates degrees, 16,163 have bachelor’s degrees, and 9,248 hold a graduate or professional degree.
Source: ESRI, 2026-09-09
