Population Demographics
As of 2026 the population of Rooks County is 4,772. The population is expected to shrink to 4,672 by 2031 - a growth rate of -0.42%.
The median age of Rooks County residents is 44.
The diversity index of Rooks County is 19.7, meaning that there is a 20% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
