Honolulu, Hawaii is the closest U.S. state capital to the equator, followed by Austin, Texas, which is the closest of the 48 contiguous states. Tallahassee, Florida is the third closest and Baton Rouge, Louisiana is the fourth closest.
The closest point to the equator of the 48 contiguous states is located just west of Key West on Ballast Key, Florida, while the closest point of all states is Ka Lae, Hawaii, located on the largest Hawaiian island. That makes Key West the closest town/city to the equator of the contiguous 48 states and Na alehu, Hawaii the closest town/city to the equator in the entire country.
Point Barrow, Alaska is the furthest point from the equator in the United States, while Barrow, Alaska is the furthest town/city, and Northwest Angle, Minnesota is the furthest point from the equator in the contiguous states.