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Richland County

County Seat:

Richland County's estimated 2025 population is 432,362 with a growth rate of 0.84% in the past year according to the most recent United States census data. Richland County is the 3rd largest county in South Carolina. The 2010 population was 385,754 and has seen a growth of 12.08% since that time.

432,362
Total Population
571
Population Density (mi²)
3
Population Rank (State)
3.6K 0.84%
Annual Population Growth

Richland County Population

Demographics

Economics and Income Statistics