| Index | Summerfield | Illinois | National |
| Income per capita | $32,628 | $47,397 | $44,883 |
| Median household income | $58,152 | $88,967 | $81,333 |
| Median income owner occupied | $70,127 | $111,557 | $106,172 |
| Median income renter occupied | $0 | $52,117 | $52,080 |
| Median earnings male | $52,664 | $60,185 | $54,343 |
| Median earnings female | $36,267 | $40,368 | $38,439 |
| Unemployment rate | 9.3% | 6.6% | 4.9% |
| Poverty level | 28.7% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 20.7% | 20.7% |
| Manufacturing sector | 17.1% | 17.1% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 4.9% | 4.9% |
| Public administration | 3.7% | 3.7% |
| Transportation, warehousing & utilities | 12.2% | 12.2% |
| Education, health & social services | 11.0% | 11.0% |
| Other | 30.5% | 30.5% |
| City | Population | Household Income | National Avg. |
| Albers, IL | 1,422 | $142,186 | 74.8% |
| Addieville, IL | 399 | $136,878 | 68.3% |
| O'Fallon, IL | 30,151 | $132,987 | 63.5% |
| Smithton, IL | 4,157 | $130,324 | 60.2% |
| Shiloh, IL | 13,870 | $129,539 | 59.3% |
| Summerfield, IL | 331 | $58,152 | 28.5% |
| City | Population | Household Income | National Avg. |
| Shaktoolik, AK | 331 | $90,267 | 11.0% |
| Limestone, FL | 331 | $0 | 100.0% |
| Kukuihaele, HI | 331 | $94,131 | 15.7% |
| Triumph, LA | 331 | $64,631 | 20.5% |
| Freeborn, MN | 331 | $63,915 | 21.4% |
| Summerfield, IL | 331 | $58,152 | 28.5% |