Population Demographics
As of 2025 the population of Pecos County is 14,564. The population is expected to shrink to 14,125 by 2030 - a growth rate of -0.61%.
The median age of Pecos County residents is 38.
The diversity index of Pecos County is 80.8, meaning that there is a 81% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.