Current Mercer Island median home price: $2,252,719
| Date | Average price (≈) | Minimum price (⇓) | Maximum price (⇑) |
|---|---|---|---|
| 2026 January | $2,406,175 | $2,165,557 | $2,646,792 |
| 2026 February | $2,429,458 | $2,186,513 | $2,672,404 |
| 2026 March | $2,452,967 | $2,207,670 | $2,698,264 |
| 2026 April | $2,476,703 | $2,229,033 | $2,724,374 |
| 2026 May | $2,500,669 | $2,250,602 | $2,750,736 |
| 2026 June | $2,524,867 | $2,272,380 | $2,777,354 |
| 2026 July | $2,549,075 | $2,294,168 | $2,803,983 |
| 2026 August | $2,555,355 | $2,299,820 | $2,810,891 |
| 2026 September | $2,567,568 | $2,310,811 | $2,824,325 |
| 2026 October | $2,592,413 | $2,333,172 | $2,851,654 |
| 2026 November | $2,617,499 | $2,355,749 | $2,879,249 |
| 2026 December | $2,642,827 | $2,378,544 | $2,907,110 |