Population Demographics
As of 2025 the population of Morrill County is 4,492. The population is expected to shrink to 4,374 by 2030 - a growth rate of -0.53%.
The median age of Morrill County residents is 44.
The diversity index of Morrill County is 46.9, meaning that there is a 47% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.