How Many States Do the Appalachian Mountains Cross? 14

The 14 States (North → South)

1. Maine
2. New Hampshire
3. Vermont
4. New York
5. Massachusetts (small western corner)
6. Connecticut (northwest hills)
7. Pennsylvania
8. Maryland
9. West Virginia
10. Ohio (eastern unglaciated plateau)
11. Virginia
12. Kentucky (eastern coalfields)
13. Tennessee
14. North Carolina
15. South Carolina (northwest)
16. Georgia (north)
17. Alabama (northeast)

Note: Some counts list 13 (excluding MA/CT as foothills) or 15 (adding Mississippi's northeastern corner). The Appalachian Regional Commission defines 13 states; geologically, the orogen extends into 14–15.

Key Subranges by State

• ME/NH/VT: White Mountains, Green Mountains.
• NY: Adirondacks (separate), Catskills, Taconic.
• PA: Ridge-and-Valley, Allegheny Plateau.
• WV: Entirely within Appalachia.
• VA/NC/TN/GA/AL: Blue Ridge, Great Smokies, Unakas, Cumberlands.