Population Demographics
As of 2024 the population of Washington County is 283,130. The population is expected to grow to 297,345 by 2029 - a growth rate of 0.98%.
The median age of Washington County residents is 41.
The diversity index of Washington County is 45.6, meaning that there is a 46% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.