According to multiple sources, the cheapest states to live in the United States are generally located in the southern and midwestern regions. The top 5 cheapest states to live in are Mississippi, Oklahoma, Kansas, Alabama, and Georgia. Other states that are often mentioned as being affordable include Missouri, Iowa, Indiana, West Virginia, and Tennessee. The cost of living index is used to compare the cost of living in different states, with a lower index indicating a lower cost of living. For example, Mississippi has a cost of living index score of 85.0, which is the lowest in the country. It is important to note that the cost of living can vary widely within a state, and factors such as housing, transportation, and healthcare costs can also impact the overall cost of living.