| Index | Johnston | South Carolina | National |
| Income per capita | $20,465 | $25,521 | $29,829 |
| Median household income | $32,500 | $46,898 | $55,322 |
| Median income owner occupied | $39,923 | $57,389 | $70,586 |
| Median income renter occupied | $22,639 | $29,505 | $35,192 |
| Median earnings male | $12,885 | $32,196 | $36,919 |
| Median earnings female | $23,389 | $23,580 | $26,250 |
| Unemployment rate | 3.0% | 5.0% | 4.7% |
| Poverty level | 23.1% | 17.2% | 15.1% |
| Labour Type | Male | Female |
| Construction industry | 15.2% | 15.2% |
| Manufacturing sector | 33.6% | 33.6% |
| Financial & insurance services | 0.5% | 0.5% |
| Wholesale & retail services | 10.3% | 10.3% |
| Public administration | 1.1% | 1.1% |
| Transportation, warehousing & utilities | 1.8% | 1.8% |
| Education, health & social services | 5.2% | 5.2% |
| Other | 32.4% | 32.4% |
| City | Population | Household Income | National Avg. |
| Ward, SC | 216 | $45,000 | 18.7% |
| Trenton, SC | 266 | $41,250 | 25.4% |
| Monetta, SC | 253 | $41,111 | 25.7% |
| Saluda, SC | 3,603 | $34,625 | 37.4% |
| Ridge Spring, SC | 676 | $33,958 | 38.6% |
| Johnston, SC | 2,556 | $32,500 | 41.3% |
| City | Population | Household Income | National Avg. |
| Lake City, AR | 2,556 | $50,271 | 9.1% |
| La Porte City, IA | 2,556 | $57,348 | 3.7% |
| Eddyville, KY | 2,556 | $32,411 | 41.4% |
| Norway, ME | 2,556 | $36,042 | 34.9% |
| West Belmar, NJ | 2,556 | $105,329 | 90.4% |
| Johnston, SC | 2,556 | $32,500 | 41.3% |
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