Current Mercer Island median home price: $2,252,719
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 March | $2,315,226 | $2,083,704 | $2,546,749 |
| 2026 April | $2,337,605 | $2,103,845 | $2,571,366 |
| 2026 May | $2,360,200 | $2,124,180 | $2,596,220 |
| 2026 June | $2,383,013 | $2,144,712 | $2,621,314 |
| 2026 July | $2,405,861 | $2,165,275 | $2,646,447 |
| 2026 August | $2,411,788 | $2,170,609 | $2,652,967 |
| 2026 September | $2,423,315 | $2,180,983 | $2,665,646 |
| 2026 October | $2,446,738 | $2,202,064 | $2,691,412 |
| 2026 November | $2,470,388 | $2,223,349 | $2,717,427 |
| 2026 December | $2,494,266 | $2,244,840 | $2,743,693 |