Population Demographics
As of 2024 the population of Mandan is 25,307. The population is expected to grow to 26,335 by 2029 - a growth rate of 0.80%.
The median age of Mandan residents is 38.
The diversity index of Mandan is 36.0, meaning that there is a 36% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.