| Index | St. Augustine | Illinois | National |
| Income per capita | $32,008 | $47,397 | $44,883 |
| Median household income | $67,084 | $88,967 | $81,333 |
| Median income owner occupied | $70,400 | $111,557 | $106,172 |
| Median income renter occupied | $0 | $52,117 | $52,080 |
| Median earnings male | $35,432 | $60,185 | $54,343 |
| Median earnings female | $30,206 | $40,368 | $38,439 |
| Unemployment rate | 3.9% | 6.6% | 4.9% |
| Poverty level | 17.3% | 14.0% | 15.1% |


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| Labour Type | Male | Female |
| Construction industry | 0.0% | 0.0% |
| Manufacturing sector | 20.7% | 20.7% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 10.3% | 10.3% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 20.7% | 20.7% |
| Education, health & social services | 20.7% | 20.7% |
| Other | 20.7% | 20.7% |
| City | Population | Household Income | National Avg. |
| Gilson, IL | 201 | $157,805 | 94.0% |
| Knoxville, IL | 3,234 | $96,054 | 18.1% |
| Fairview, IL | 466 | $85,620 | 5.3% |
| Monmouth, IL | 9,066 | $76,211 | 6.3% |
| Maquon, IL | 189 | $71,480 | 12.1% |
| St. Augustine, IL | 138 | $67,084 | 17.5% |
| City | Population | Household Income | National Avg. |
| Moorefield, AR | 138 | $78,524 | 3.5% |
| Mead Ranch, AZ | 138 | $0 | 100.0% |
| Dutch Flat, CA | 138 | $61,634 | 24.2% |
| Brick Center, CO | 138 | $0 | 100.0% |
| Martinsburg, IA | 138 | $0 | 100.0% |
| St. Augustine, IL | 138 | $67,084 | 17.5% |