Which Southeastern U.S. States Border the Atlantic, Gulf, or Both?

Atlantic Coast (7 states): Delaware, Maryland, Virginia, North Carolina, South Carolina, Georgia, Florida.

Gulf Coast (4 states): Alabama, Mississippi, Louisiana, Texas.

Both: Only Florida touches both (Atlantic east coast, Gulf panhandle/west coast).

Thus, the majority of southeastern states are Atlantic-facing; Florida is the sole dual-coast state.