| Index | Barnwell | South Carolina | National |
| Income per capita | $26,782 | $37,827 | $44,883 |
| Median household income | $46,210 | $68,647 | $81,333 |
| Median income owner occupied | $88,409 | $87,094 | $106,172 |
| Median income renter occupied | $17,313 | $44,371 | $52,080 |
| Median earnings male | $42,395 | $46,426 | $54,343 |
| Median earnings female | $27,639 | $34,595 | $38,439 |
| Unemployment rate | 2.8% | 5.3% | 4.9% |
| Poverty level | 34.0% | 17.2% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 40.2% | 40.2% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 8.8% | 8.8% |
| Public administration | 3.3% | 3.3% |
| Transportation, warehousing & utilities | 7.2% | 7.2% |
| Education, health & social services | 16.2% | 16.2% |
| Other | 24.4% | 24.4% |
| City | Population | Household Income | National Avg. |
| Snelling, SC | 228 | $74,250 | 8.7% |
| Norway, SC | 401 | $61,718 | 24.1% |
| Sycamore, SC | 151 | $58,878 | 27.6% |
| Williston, SC | 3,028 | $50,765 | 37.6% |
| Kline, SC | 154 | $50,296 | 38.2% |
| Barnwell, SC | 4,497 | $46,210 | 43.2% |
| City | Population | Household Income | National Avg. |
| Nashville, AR | 4,497 | $49,644 | 39.0% |
| Ste. Genevieve, MO | 4,497 | $77,165 | 5.1% |
| South Hill, VA | 4,496 | $81,048 | 0.4% |
| La Verkin, UT | 4,498 | $73,800 | 9.3% |
| Holt, AL | 4,495 | $54,719 | 32.7% |
| Barnwell, SC | 4,497 | $46,210 | 43.2% |