| Index | Vandalia | Illinois | National |
| Income per capita | $26,504 | $47,397 | $44,883 |
| Median household income | $54,346 | $88,967 | $81,333 |
| Median income owner occupied | $64,205 | $111,557 | $106,172 |
| Median income renter occupied | $33,204 | $52,117 | $52,080 |
| Median earnings male | $33,244 | $60,185 | $54,343 |
| Median earnings female | $33,969 | $40,368 | $38,439 |
| Unemployment rate | 1.7% | 6.6% | 4.9% |
| Poverty level | 20.1% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 8.7% | 8.7% |
| Manufacturing sector | 19.4% | 19.4% |
| Financial & insurance services | 1.5% | 1.5% |
| Wholesale & retail services | 17.4% | 17.4% |
| Public administration | 6.4% | 6.4% |
| Transportation, warehousing & utilities | 7.4% | 7.4% |
| Education, health & social services | 10.0% | 10.0% |
| Other | 27.4% | 27.4% |
| City | Population | Household Income | National Avg. |
| St. Peter, IL | 456 | $74,518 | 8.4% |
| Fillmore, IL | 302 | $71,756 | 11.8% |
| Brownstown, IL | 871 | $69,806 | 14.2% |
| Smithboro, IL | 222 | $68,982 | 15.2% |
| Bingham, IL | 90 | $65,761 | 19.1% |
| Vandalia, IL | 6,854 | $54,346 | 33.2% |
| City | Population | Household Income | National Avg. |
| Contra Costa Centre, CA | 6,854 | $181,000 | 122.5% |
| Hamilton, AL | 6,853 | $58,297 | 28.3% |
| Notre Dame, IN | 6,853 | $38,632 | 52.5% |
| Logan, OH | 6,853 | $60,860 | 25.2% |
| Folcroft, PA | 6,856 | $82,514 | 1.5% |
| Vandalia, IL | 6,854 | $54,346 | 33.2% |