Barnwell County
- Population
- 20,521
- Area
- 548.38 sq mi (1,420.29 km²), 8.88 sq mi water
- Median age
- 40.4
- Households
- 8,116
- Persons per household
- 2.5
- Median household income
- $46,626
- Median house value
- $106,000
Demographics: 2020–2024 ACS
Overnight
72°F
Clear
Monday
95°F
Sunny
Monday Night
73°F
Mostly Clear
Tuesday
91°F
Mostly Sunny5% precip