Population Demographics
As of 2026 the population of Pecos County is 14,561. The population is expected to shrink to 14,157 by 2031 - a growth rate of -0.56%.
The median age of Pecos County residents is 38.
The diversity index of Pecos County is 81.1, 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.