ChartsEconomic maps The ratio of the average income of the richest 20% to the poorest 20% September 21, 2015 Alex This post may contain affiliate links. As an Amazon Associate, we earn from qualifying purchases. Related Posts:The Richest Person in Every US StateThe richest person in every U.S. state, by industryHow the World’s Income Groups Are ChangingThe Most Affordable ZIP Codes to Buy Property in…The most viral video in each U.S. stateHousehold Income in the United States MappedIncome Needed to be in the Top 1% in Each U.S. StateSex Ratio by U.S. County