| Index | Williamsfield | Illinois | National |
| Income per capita | $47,606 | $47,397 | $44,883 |
| Median household income | $89,165 | $88,967 | $81,333 |
| Median income owner occupied | $112,902 | $111,557 | $106,172 |
| Median income renter occupied | $0 | $52,117 | $52,080 |
| Median earnings male | $61,118 | $60,185 | $54,343 |
| Median earnings female | $45,961 | $40,368 | $38,439 |
| Unemployment rate | 1.5% | 6.6% | 4.9% |
| Poverty level | 10.2% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 6.9% | 6.9% |
| Manufacturing sector | 41.5% | 41.5% |
| Financial & insurance services | 0.0% | 0.0% |
| Wholesale & retail services | 14.6% | 14.6% |
| Public administration | 0.0% | 0.0% |
| Transportation, warehousing & utilities | 6.9% | 6.9% |
| Education, health & social services | 15.4% | 15.4% |
| Other | 12.3% | 12.3% |
| City | Population | Household Income | National Avg. |
| Gilson, IL | 201 | $157,805 | 94.0% |
| Oak Run, IL | 487 | $129,827 | 59.6% |
| Elmwood, IL | 2,575 | $112,435 | 38.2% |
| Knoxville, IL | 3,234 | $96,054 | 18.1% |
| Princeville, IL | 1,741 | $87,975 | 8.2% |
| Williamsfield, IL | 526 | $89,165 | 9.6% |
| City | Population | Household Income | National Avg. |
| Dutton, AL | 526 | $0 | 100.0% |
| Rose Bud, AR | 526 | $64,549 | 20.6% |
| Maynard, IA | 526 | $56,680 | 30.3% |
| West Baden Springs, IN | 526 | $68,546 | 15.7% |
| Olpe, KS | 526 | $99,470 | 22.3% |
| Williamsfield, IL | 526 | $89,165 | 9.6% |