Population Demographics
As of 2025 the population of Jamestown, ND is 15,920. The population is expected to shrink to 15,812 by 2030 - a growth rate of -0.14%.
The median age of Jamestown, ND residents is 40.
The diversity index of Jamestown, ND is 27.8, meaning that there is a 28% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.