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Fairfield County

County Seat:

Fairfield County's estimated 2026 population is 20,323 with a growth rate of -0.11% in the past year according to the most recent United States census data. Fairfield County is the 39th largest county in South Carolina. The 2010 population was 23,860 and has seen a growth of -14.82% since that time.

20,323
Total Population
30
Population Density (mi²)
39
Population Rank (State)
-23 -0.11%
Annual Population Growth

Fairfield County Population

Demographics

Economics and Income Statistics