Using IQ, SAT, and ACT scores, the collection of data can show which states are smarter than others. The United States is a big place and there are plenty of brilliant people living in every state in the country. That being said, some states have a reputation for being a little bit, well, less intelligent than others. Based on the data, here are the top 10 smartest states in the United States: Massachusetts, Minnesota, New Hampshire, Connecticut, Wisconsin, Kansas, Vermont, Iowa, New Jersey and Colorado.