Population Demographics
As of 2025 the population of Gaines County is 22,711. The population is expected to grow to 23,846 by 2030 - a growth rate of 0.98%.
The median age of Gaines County residents is 29.
The diversity index of Gaines County is 73.5, meaning that there is a 74% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.