| Index | Williamsville | Illinois | National |
| Income per capita | $41,651 | $31,502 | $29,829 |
| Median household income | $86,326 | $59,196 | $55,322 |
| Median income owner occupied | $90,500 | $75,354 | $70,586 |
| Median income renter occupied | $44,464 | $34,488 | $35,192 |
| Median earnings male | $57,386 | $40,474 | $36,919 |
| Median earnings female | $41,625 | $27,197 | $26,250 |
| Unemployment rate | 1.1% | 5.3% | 4.7% |
| Poverty level | 9.8% | 14.0% | 15.1% |


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| 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 | 4,470 | $123,232 | 122.8% |
| Leland Grove, IL | 1,237 | $111,458 | 101.5% |
| Spaulding, IL | 956 | $106,250 | 92.1% |
| Rochester, IL | 3,778 | $95,463 | 72.6% |
| Mechanicsburg, IL | 918 | $80,972 | 46.4% |
| Williamsville, IL | 1,468 | $86,326 | 56.0% |
| City | Population | Household Income | National Avg. |
| Bunker Hill, IL | 1,468 | $53,606 | 3.1% |
| Clarkson, KY | 1,468 | $26,146 | 52.7% |
| Leavittsburg, OH | 1,468 | $45,096 | 18.5% |
| Stratford, OK | 1,468 | $32,188 | 41.8% |
| University of Pittsburgh Johnstown, PA | 1,468 | $0 | 100.0% |
| Williamsville, IL | 1,468 | $86,326 | 56.0% |