Official Census numbers come out in January, but the consulting firm Election Data Services Inc. projects they’ll result in Arizona being awarded one additional representative in Washington, beginning in 2022. Estimates rank Arizona as the fifth-fastest growing state with over a million new residents since the 2010 census. Only Utah, Texas, Idaho and Nevada have had greater growth over the past decade. Federal law caps members in the U.S. House of Representatives at 435, to be assigned according to population estimates from the decennial census. Election Data Services Preliminary figures from the U.S. Census Bureau show which states can expect to gain or lose a seat in the U.S. House of Representatives once the 2020 Census data is finalized.