Before we start running down the list of Illinois' billionaires who are on the Forbes 400 list of the richest people in the United States, let's pause for a moment and take a little pity on the states that have no billionaires. As of 2024, three U.S. states, Alaska, Delaware, and West Virginia, have no billionaire residents. What kind of money does one have to have in order to make the Forbes list? Forbes.com:The 400 richest people in the U.S. are worth a record $6.6 trillion after getting $1.2 trillion richer over the past year amid surging stock markets and AI mania. The governor isn't even the richest Pritzker.