Community and County Profiles
As of 2026 the population of Mandan is 25,658. The population is expected to grow to 26,568 by 2031 - a growth rate of 0.70%.
The median age of Mandan residents is 37.
The diversity index of Mandan is 37.3, meaning that there is a 37% 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 Mandan is $98,209 and projected to be $109,383 in 2031. Per capita income is $42,308, projected to be $47,246 in 2031. 2.47% of households – 635 – have an income of $200,000 or higher. Average net worth is $682,169 and the average disposable income is $77,762.
There are 11,663 housing units in Mandan; 6,974 are owner-occupied, 3,931 are rented, and 758 are vacant. The average home value is $336,794, with 2,303 homes built in 2010 or later, and 1,007 built in 1939 or earlier.
There are 944 businesses in Mandan, employing 9,058 workers and pulling from a labor force of 13,733 age 16 and above. 7,981 workers commute into Mandan from outside the county or state. Key industries for the area include:
5,739 residents both live and work in/around Mandan. The average travel time is 17.6 minutes. 4.65% people have a commute of less than 5 minutes while 3.38% commute 90 minutes or more each way. Of commuters, 10,713 drive alone, 1,257 carpool, and 0 take public transportation. 268 use other modes of transport such as motorcycle, bicycle, walking, etc. 1,495 residents work from home.
4,590 members of the workforce hold a high school diploma or GED. 2,594 have associates degrees, 4,235 have bachelor’s degrees, and 1,405 hold a graduate or professional degree.
Source: ESRI, 2026-08-31
