Current Alton median home price: $557,834
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 March | $599,057 | $539,151 | $658,962 |
| 2026 April | $604,500 | $544,050 | $664,950 |
| 2026 May | $609,992 | $548,993 | $670,991 |
| 2026 June | $615,534 | $553,981 | $677,088 |
| 2026 July | $621,127 | $559,014 | $683,240 |
| 2026 August | $622,028 | $559,825 | $684,231 |
| 2026 September | $621,447 | $559,302 | $683,592 |
| 2026 October | $622,478 | $560,230 | $684,726 |
| 2026 November | $626,703 | $564,033 | $689,373 |
| 2026 December | $632,397 | $569,157 | $695,637 |