You don't. Experts say they don't know of a cost of living index for individual states. Even if one existed, it wouldn't be useful to compare cost of living by state, they say. Take New York state as an example. Living in Manhattan is much more expensive than living in upstate New York, so a cost of living index for the entire state would be misleading.
Many people want to know what state has the lowest cost of living. The state with the lowest cost of living can only be determined by analyzing the cost of living for all cities in each state. We have compiled a list of cities by state, so you can easily compare the cost of living state to state.