MERCER ISLAND Most people like to dream of some day living on an island. Here’s your opportunity to fulfill that dream by moving to Mercer Island. It’s in the middle of Lake Washington and home to about 22,000 people. It’s connected by Interstate 90 to Seattle and Bellevue, and its central location and island status help to provide a strong sense of community as well as being very convenient. Boaters can enjoy having their boats in their backyard. The short commute to Seattle, the woodsy quiet setting and the excellent schools have made Mercer Island one of the most desirable places to live in the Seattle area. According to Forbes, the city of Mercer Island is the wealthiest in the state. Listed here are only waterfront homes, most of which have private docks. Prices range from around $1.5 million to over $10 million.