| Index | Johnston | South Carolina | National |
| Income per capita | $30,699 | $37,827 | $44,883 |
| Median household income | $47,977 | $68,647 | $81,333 |
| Median income owner occupied | $59,300 | $87,094 | $106,172 |
| Median income renter occupied | $33,589 | $44,371 | $52,080 |
| Median earnings male | $18,833 | $46,426 | $54,343 |
| Median earnings female | $34,367 | $34,595 | $38,439 |
| Unemployment rate | 3.2% | 5.3% | 4.9% |
| Poverty level | 23.1% | 17.2% | 15.1% |


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| 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 | 220 | $65,912 | 19.0% |
| Monetta, SC | 258 | $62,481 | 23.2% |
| Trenton, SC | 273 | $60,478 | 25.6% |
| Saluda, SC | 3,688 | $52,046 | 36.0% |
| Ridge Spring, SC | 697 | $51,367 | 36.8% |
| Johnston, SC | 2,607 | $47,977 | 41.0% |
| City | Population | Household Income | National Avg. |
| Colwyn, PA | 2,607 | $74,111 | 8.9% |
| Marysville, PA | 2,607 | $85,743 | 5.4% |
| Colby, WI | 2,607 | $72,262 | 11.2% |
| Cannon AFB, NM | 2,606 | $75,005 | 7.8% |
| South Alamo, TX | 2,606 | $40,654 | 50.0% |
| Johnston, SC | 2,607 | $47,977 | 41.0% |