| Index | Williamsville | Illinois | National |
| Income per capita | $60,993 | $47,397 | $44,883 |
| Median household income | $126,573 | $88,967 | $81,333 |
| Median income owner occupied | $133,433 | $111,557 | $106,172 |
| Median income renter occupied | $67,188 | $52,117 | $52,080 |
| Median earnings male | $82,915 | $60,185 | $54,343 |
| Median earnings female | $59,950 | $40,368 | $38,439 |
| Unemployment rate | 1.2% | 6.6% | 4.9% |
| Poverty level | 9.8% | 14.0% | 15.1% |

| Labour Type | Male | Female |
| Construction industry | 11.2% | 11.2% |
| Manufacturing sector | 4.1% | 4.1% |
| Financial & insurance services | 5.8% | 5.8% |
| Wholesale & retail services | 6.1% | 6.1% |
| Public administration | 13.7% | 13.7% |
| Transportation, warehousing & utilities | 10.7% | 10.7% |
| Education, health & social services | 15.0% | 15.0% |
| Other | 33.0% | 33.0% |
| City | Population | Household Income | National Avg. |
| Sherman, IL | 4,619 | $185,165 | 127.7% |
| Leland Grove, IL | 1,274 | $165,047 | 102.9% |
| Spaulding, IL | 985 | $156,428 | 92.3% |
| Rochester, IL | 3,914 | $139,866 | 72.0% |
| Mechanicsburg, IL | 942 | $121,730 | 49.7% |
| Williamsville, IL | 1,518 | $126,573 | 55.6% |
| City | Population | Household Income | National Avg. |
| Vernon Center, NJ | 1,518 | $92,759 | 14.0% |
| Bartonville, TX | 1,518 | $177,967 | 118.8% |
| Saint-Quentin, NB | 1,518 | n/a | |
| Aberdeen, OH | 1,517 | $51,394 | 36.8% |
| Woxall, PA | 1,519 | $150,268 | 84.8% |
| Williamsville, IL | 1,518 | $126,573 | 55.6% |