Methodology: GOBankingRates looked at the average retirement age in every state, as reported by Money Talk News on Sep. 29, 2019, using data from the U.S. Census Bureau’s latest American Community Survey and compared it with the cost to retire in each state. To find the cost of a comfortable retirement in each of the respective states, GOBankingRates analyzed consumption expenditures of Americans aged 65 and older, based on data sourced from the Bureau of Labor Statistics' (BLS) Consumer Expenditure Survey 2019: (1) annual spending on groceries, defined as "food at home" by the BLS; (2) annual spending on housing, defined as "shelter" by the BLS; (3) annual spending on transportation, defined as ""Gasoline, other fuels, and motor oil" + "other vehicle expenses" by the BLS; (4) annual spending on healthcare; (5) annual spending on utilities, defined as "uilities, uels and other services" by BLS. These were then adjusted to every state's itemized cost-of-living index, sourced from the Missouri Economic Research and Information Center's 2020 Quarter 3 average annual cost-of-living index. After calculating total necessities expenditures, an additional savings buffer was calculated by assuming that total expenditures covers 80% of one's budget (50% for necessities and 30% for discretionary spending), with 20% left over for savings. All of GOBankingRates original data and analyses was conducted on Dec. 14, 2020.