| Median Foreclosure: | $39,166 |
| Median For Sale: | $227,500 |
| Population | 1,439 |
| Square Miles | 1.24 |
| Population Density | 1,158.62 |
| Median Age | 35 |
| Median Household Income | $50,238 |
| Per Capita Income | $20,201 |
| Median Rent | $394 |
| Percent Renters | 12% |
| Median Williamsville, IL For Sale Price: | $227,500 |
| 2 Bedroom For Sale Median Price: | $84,900 |
| 3 Bedroom For Sale Median Price: | $284,900 |
| 4 Bedroom For Sale Median Price: | $220,000 |
| Median Williamsville, IL Foreclosure Price: | $39,166 |
| 3 Bedroom Foreclosure Median Price: | $39,166 |