| Index | Maryville | Illinois | National |
| Income per capita | $67,819 | $47,397 | $44,883 |
| Median household income | $124,089 | $88,967 | $81,333 |
| Median income owner occupied | $155,176 | $111,557 | $106,172 |
| Median income renter occupied | $58,328 | $52,117 | $52,080 |
| Median earnings male | $80,209 | $60,185 | $54,343 |
| Median earnings female | $61,388 | $40,368 | $38,439 |
| Unemployment rate | 4.1% | 6.6% | 4.9% |
| 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 | 3,157 | $152,229 | 87.2% |
| O'Fallon, IL | 30,151 | $132,987 | 63.5% |
| Shiloh, IL | 13,870 | $129,539 | 59.3% |
| St. Jacob, IL | 1,590 | $124,201 | 52.7% |
| Glen Carbon, IL | 12,963 | $124,119 | 52.6% |
| Maryville, IL | 8,220 | $124,089 | 52.6% |
| City | Population | Household Income | National Avg. |
| August, CA | 8,218 | $52,089 | 36.0% |
| Caldwell, NJ | 8,222 | $154,782 | 90.3% |
| Sutherlin, OR | 8,222 | $68,555 | 15.7% |
| Dryden, ON | 8,222 | n/a | |
| Skiatook, OK | 8,217 | $66,011 | 18.8% |
| Maryville, IL | 8,220 | $124,089 | 52.6% |