Maine is the country’s most easterly state and the largest in New England. It ranks 39th in size among the 50 states in the US covering a total area of 33,265 sq mi (86,156 sq km), including 30,995 sq mi (80,277 sq km) of land and 2,270 sq mi (5,879 sq km) of inland water.

Maine is surrounded on the North by the Canadian provinces of Quebec and New Brunswick; on the East by New Brunswick; on the South East and South by the Atlantic Ocean; and on the West by New Hampshire and Quebec.
Coast of Maine is dotted by hundreds of islands. The largest is Mt. Desert Island. Deer Isle, Vinalhaven, and Isle au Haut are some of the other islands of Maine. The total boundary length of Maine is 883 mi (1,421 km).

The state's geographic center is in Piscataquis County, 18 mi (29 km) N of Dover-Foxcroft. The capital of Maine is Augusta.