Washington County Flag

Washington County

State:
Utah
County Seat:
St. George

Washington County's estimated 2026 population is 218,359 with a growth rate of 2.44% in the past year according to the most recent United States census data. Washington County is the 5th largest county in Utah. The 2010 population was 138,397 and has seen a growth of 57.78% since that time.

218,359
Total Population
90
Population Density (mi²)
5
Population Rank (State)
5.2K 2.44%
Annual Population Growth

Washington County Population

Demographics

Economics and Income Statistics