Seniors on Mercer Island pay around $7,650 monthly for assisted living, with local rates outpacing Washington’s typical rate of approximately $6,138, as well as the national median of $5,350. Several nearby cities offer more economically priced care, including Mount Vernon and Olympia, where respective rates come to $6,391 and $5,050. However, Mercer Island offers a budget-friendly alternative to cities such as Bremerton, where facilities charge around an additional $790 per month, and Walla Walla, where rates exceed Mercer Island’s median by about $2,060.