Population Demographics
As of 2025 the population of Hays County is 28,733. The population is expected to shrink to 28,617 by 2030 - a growth rate of -0.08%.
The median age of Hays County residents is 35.
The diversity index of Hays County is 33.5, meaning that there is a 34% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
