Population Demographics
As of 2025 the population of Berkeley County, WV is 132,864. The population is expected to grow to 145,431 by 2030 - a growth rate of 1.82%.
The median age of Berkeley County, WV residents is 40.
The diversity index of Berkeley County, WV is 45.0, meaning that there is a 45% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.