The 14 US States Bordering the Atlantic Ocean

North to South

1. Maine
2. New Hampshire
3. Massachusetts
4. Rhode Island
5. Connecticut
6. New York
7. New Jersey
8. Delaware
9. Maryland
10. Virginia
11. North Carolina
12. South Carolina
13. Georgia
14. Florida

Notes

• Connecticut borders Long Island Sound (Atlantic marginal sea)
• New York has Atlantic coast (Long Island) + Hudson estuary
• Pennsylvania has tidal Delaware River but no open Atlantic coast
• DC, NH, VT, WV, KY, TN, AR, etc. — no Atlantic coastline

These 14 states comprise the US "East Coast" politically and culturally.