Current Illiopolis median home price: $122,506
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2025 September | $136,442 | $122,798 | $150,086 |
| 2025 October | $135,877 | $122,289 | $149,465 |
| 2025 November | $135,076 | $121,568 | $148,584 |
| 2025 December | $134,280 | $120,852 | $147,708 |