Population Demographics
As of 2026 the population of Gaines County is 23,100. The population is expected to grow to 24,006 by 2031 - a growth rate of 0.77%.
The median age of Gaines County residents is 29.
The diversity index of Gaines County is 73.1, meaning that there is a 73% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.