City in Barnwell County, South Carolina · 7.8 sq mi · 587 people per sq mi
4,606 people live in Barnwell. The typical household earns $52,006, and the median resident is 36.4 years old.
2026 projection
From 4,652 in 2020
Poverty rate 23.89%
Men 36.2 · Women 37.1
1880–2026
4,606
2026 projection
1% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
1880–2026
4,606
2026 projection
1% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 4,606 | -13 | 0.28% |
|---|---|---|---|
| 2025 | 4,619 | +21 | 0.46% |
| 2024 | 4,598 | +13 | 0.28% |
| 2023 | 4,585 | -17 | 0.37% |
| 2022 | 4,602 | -35 | 0.75% |
| 2021 | 4,637 | -15 | 0.32% |
| 2020 | 4,652 | -3 | 0.06% |
| 2019 | 4,655 | -22 | 0.47% |
| 2018 | 4,677 | -21 | 0.45% |
| 2017 | 4,698 | -35 | 0.74% |
Showing 10 of 30 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Barnwell has a population change lower than Barnwell County, South Carolina, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 46 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 4 residents
36% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 36% | 38% | 33% |
| Never married | 45% | 51% | 39% |
| Divorced | 8% | 5% | 10% |
| Widowed | 9% | 3% | 15% |
| Separated | 3% | 3% | 2% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources