Population Demographics
As of 2025 the population of Wadena County is 14,454. The population is expected to grow to 14,689 by 2030 - a growth rate of 0.32%.
The median age of Wadena County residents is 43.
The diversity index of Wadena County is 18.6, meaning that there is a 19% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.

