The richest state in USA is Maryland, with a median household income of $75,847. The state's economy is driven by a number of factors, including agriculture, fishing, manufacturing, and tourism. In the United States, there is a lot of variation in the standard of living from state to state. This variation is largely due to the different levels of wealth in each state. Some states are naturally richer than others, due to factors like their climate, natural resources, and economy....