Population Demographics
As of 2026 the population of Rushmore Region is 203,961. The population is expected to grow to 214,635 by 2031 - a growth rate of 1.03%.
The median age of Rushmore Region residents is 41.
The diversity index of Rushmore Region is 39.1, 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.