
Clark County
- State:
- Arkansas
- County Seat:
- Arkadelphia
Clark County's estimated 2025 population is 21,270 with a growth rate of -0.01% in the past year according to the most recent United States census data. Clark County is the 31st largest county in Arkansas. The 2010 population was 22,928 and has seen a growth of -7.23% since that time.