To identify the most expensive place in every state, 24/7 Wall St. ranked counties based on the estimated cost to meet the basic needs for a single adult on a monthly basis. These needs include housing, food, transportation, health care, taxes, and other necessities. Estimated monthly cost of living was provided by the Economic Policy Institute, a nonprofit think tank. All EPI data was adjusted from 2017 dollars to 2019 dollars using Consumer Price Index data from the U.S. Bureau of Labor Statistics. Supplemental data on median household income came from the U.S. Census Bureau’s American Community Survey and are five-year estimates for 2018. Data on unemployment for May 2020 came from the BLS and are not seasonally adjusted.