Canadian Provinces Bordering the U.S.: Seven Share the Line

Canada has provinces and territories, not states. Seven of its ten provinces share a land or water border with the United States:

1. British Columbia — Pacific coast, borders WA, ID, MT (49th parallel + marine)
2. Alberta — Borders MT (49th parallel)
3. Saskatchewan — Borders MT, ND (49th parallel)
4. Manitoba — Borders ND, MN (49th parallel + Lake of the Woods)
5. Ontario — Longest border: MN, MI, OH, PA, NY (Great Lakes + rivers)
6. Quebec — Borders NY, VT, NH, ME (45th parallel + rivers/lakes)
7. New Brunswick — Borders ME (St. Croix River, land)

Non-Bordering Provinces

Prince Edward Island (island), Newfoundland and Labrador (Atlantic).

Territories

Yukon, Northwest Territories, Nunavut border only Alaska (Yukon) or Arctic Ocean—no U.S. land border.

Scale

Canada–U.S. border: 8,891 km (5,525 mi) — world's longest international boundary. 90% of Canadians live within 160 km of it.