The cheapest state to live in the United States is Mississippi, with a cost of living index score of 83.3. Other affordable states include Oklahoma, Kansas, Alabama, Georgia, Missouri, Iowa, Indiana, West Virginia, and Tennessee. These states offer lower costs of goods and services, particularly in housing, transportation, and utilities, making them more affordable for residents. Additionally, Ohio and Missouri are also mentioned as affordable states to live in, with Missouri having the sixth lowest cost of living in the United States for the third quarter of 2023. These states provide a more affordable living environment compared to other regions in the country.