Population Demographics
As of 2025 the population of Long Prairie, MN is 3,700. The population is expected to grow to 3,714 by 2030 - a growth rate of 0.08%.
The median age of Long Prairie, MN residents is 37.
The diversity index of Long Prairie, MN is 81.2, meaning that there is a 81% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.