| Index | Williamson | Illinois | National |
| Income per capita | $26,232 | $31,502 | $29,829 |
| Median household income | $46,875 | $59,196 | $55,322 |
| Median income owner occupied | $45,625 | $75,354 | $70,586 |
| Median income renter occupied | $53,333 | $34,488 | $35,192 |
| Median earnings male | $42,917 | $40,474 | $36,919 |
| Median earnings female | $30,833 | $27,197 | $26,250 |
| Unemployment rate | 2.9% | 5.3% | 4.7% |
| Poverty level | 11.0% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 6.1% | 6.1% |
| Manufacturing sector | 32.7% | 32.7% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 18.4% | 18.4% |
| Public administration | 8.2% | 8.2% |
| Transportation, warehousing & utilities | 10.2% | 10.2% |
| Education, health & social services | 0.0% | 0.0% |
| Other | 20.4% | 20.4% |
| City | Population | Household Income | National Avg. |
| Holiday Shores, IL | 3,080 | $104,038 | 88.1% |
| Grantfork, IL | 475 | $85,313 | 54.2% |
| Dorchester, IL | 151 | $78,750 | 42.3% |
| Edwardsville, IL | 25,332 | $75,271 | 36.1% |
| Pierron, IL | 393 | $70,313 | 27.1% |
| Williamson, IL | 202 | $46,875 | 15.3% |
| City | Population | Household Income | National Avg. |
| Fairford, AL | 202 | $0 | 100.0% |
| Ratcliff, AR | 202 | $40,278 | 27.2% |
| Carrizo, AZ | 202 | $26,522 | 52.1% |
| Greenhorn, CA | 202 | $27,955 | 49.5% |
| Alpine, CO | 202 | $0 | 100.0% |
| Williamson, IL | 202 | $46,875 | 15.3% |