Where Is Maine? Northeasternmost U.S. State, Bordering Canada and the Atlantic

Maine occupies the northeastern corner of the contiguous United States.

Borders

• North: Canadian provinces of Quebec (northwest) and New Brunswick (northeast) — 611 mi (983 km) international boundary.
• West: New Hampshire — 165 mi (266 km), largely following the Salmon Falls / Piscataqua Rivers.
• South & East: Atlantic Ocean — 3,478 mi (5,597 km) of tidal coastline (most in US).

Key Metrics

• Area: 35,385 sq mi (91,646 km²) — 12th largest state.
• Population: 1,385,000 (2023 est.) — 42nd / 9th least dense.
• Capital: Augusta (inland, on Kennebec River).
• Largest city: Portland (coastal, 68,000).
• Highest point: Katahdin (5,269 ft / 1,606 m) — Baxter State Park.

Regional Identity

• Only New England state bordering just one US state.
• Only state with a one-syllable name.
• Easternmost point in US: West Quoddy Head Light (44°49′N, 66°57′W).

Maine = top-right corner of the lower 48, where the woods meet the Atlantic.