According to official data published on an official web-site. For example, at the "U.S. State Life Tables"
https://www.cdc.gov/nchs/fastats/life-expectancy.htm
In 2019 the highest life expectancy was in the states of Hawaii (80.9 years), California (80.9 years), and New York (80.7 years).
You can use tables and charts at Wikipedia for estimation: https://en.wikipedia.org/wiki/List_of_U.S._states_and_territories_by_life_expectancy
2035 including
Update 2025-04-29 (PST): * United States Mortality DataBase (https://usa.mortality.org) publishes state life expectancy estimates approximately one year earlier than the CDC’s U.S. State Life Tables. (AI summary of creator comment)
1,000United States Mortality DataBase publishes its estimate of life expectancy per state approximately an year earlier than data of the "U.S. State Life Tables" becomes available.