| Index | Maryville | Illinois | National |
| Income per capita | $45,441 | $31,502 | $29,829 |
| Median household income | $84,293 | $59,196 | $55,322 |
| Median income owner occupied | $106,125 | $75,354 | $70,586 |
| Median income renter occupied | $39,198 | $34,488 | $35,192 |
| Median earnings male | $53,582 | $40,474 | $36,919 |
| Median earnings female | $42,265 | $27,197 | $26,250 |
| Unemployment rate | 3.9% | 5.3% | 4.7% |
| Poverty level | 4.5% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 12.2% | 12.2% |
| Manufacturing sector | 11.1% | 11.1% |
| Financial & insurance services | 13.4% | 13.4% |
| Wholesale & retail services | 6.6% | 6.6% |
| Public administration | 4.0% | 4.0% |
| Transportation, warehousing & utilities | 14.1% | 14.1% |
| Education, health & social services | 16.7% | 16.7% |
| Other | 21.3% | 21.3% |
| City | Population | Household Income | National Avg. |
| Holiday Shores, IL | 3,080 | $104,038 | 88.1% |
| O'Fallon, IL | 29,487 | $90,432 | 63.5% |
| Shiloh, IL | 13,465 | $87,076 | 57.4% |
| Glen Carbon, IL | 12,468 | $84,956 | 53.6% |
| St. Jacob, IL | 1,529 | $83,750 | 51.4% |
| Maryville, IL | 7,962 | $84,293 | 52.4% |
| City | Population | Household Income | National Avg. |
| Wendell, NC | 7,962 | $62,857 | 13.6% |
| Fort Frances, ON | 7,960 | n/a | |
| Inverness, IL | 7,959 | $185,558 | 235.4% |
| Groesbeck, OH | 7,959 | $58,502 | 5.7% |
| Templeton, CA | 7,965 | $92,083 | 66.4% |
| Maryville, IL | 7,962 | $84,293 | 52.4% |