Mercer Island on a CNN list for ‘Best Places to Live’ Mercer Island is #21 on CNN top places to live/top earning towns By Reporter Staff • August 12, 2013 11:37 am Mercer Island was listed as the No. 21 top earning town in the U.S. by CNN Money. The Island has a population of 23,446 with a median family income of $148,284 and a median home price of $755,000. Check it out : http://money.cnn.com/gallery/news/economy/2013/08/12/best-places-top-earning-towns.moneymag/21.html