evidence: The seven most populous states, California, Texas, Florida, New York, Illinois, Pennsylvania and Ohio are also the seven biggest contributors to U.S. GDP, according to the Bureau of Economic Analysis. Yet, California is way ahead of the competition as far as per-capita contribution goes. While 11.7 percent of Americans live in California, the state contributed 14.2 percent to GDP in Q1 of 2023. New York state, where 5.9 percent of Americans live, had a share of 8.1 percent of GDP that quarter. Florida, which has a 6.7 percent share of population, only contributed 5.5 percent of GDP.