The Portland Head Light, first lit in 1791, is the oldest lighthouse in Maine. The state has fifty-seven active lights, two of which are maintained as private aids. The state has nine lights still standing but now inactive and three that have been destroyed. At two light stations, there were twin towers but at both of these stations only one of each pair survives as active.

The Portland Head Light, first lit in 1791, is the oldest light in the state and was the first US lighthouse completed after independence from Britain. The last lighthouse to be lit in the state, lit in 1910, the second Whitlocks Mill Light, is also the most northerly light in the state and therefore on the US Atlantic Coast. The West Quoddy Head Light sits on the easternmost point of the continental United States. The tallest tower is that of Boon Island Light at 137 feet (42 m), though the Seguin Light focal plane, at 180 feet (55 m), is the highest above sea level in the state.

The second oldest of Maine′s coastal lighthouses was Sequin Light on Sequin Island, built in 1795 but was replaced in 1857 with the current light.

Sixty-five lighthouses still standing on the coast of Maine cover about five thousand miles of Maine coastline which makes Maine known as the lighthouse state.

The list of lighthouses include:

Avery Rock Light (44.6540, -67.3440),

Baker Island light (44.2381, -68.1990),

Bass Harbor Head Light (44.2218, -68.3373),

Bear Island Light (44.2838, -68.2700),

Blue Hill Bay Light (44.2489, -68.4977),

Boon Island Light (43.1214, -70.4764),

Browns Head Light (44.1118, -68.9095),

Burnt Island Light (44.1341, -68.4472),

Cape Elizabeth Light, East (43.5661, -70.2001),

Cape Elizabeth Light, West (43.5642, -70.2025),

Cape Neddick Light (43.1652, -70.6078),

Crabtree Ledge Light (44.4700, -68.2030),

Cuckolds Light (43.7795, -69.6500),

Curtis light (44.2014, -69.0489),

Deer Island Thorofare Light (44.1344, -68.7033),

Dice Head Light (44.3827, -68.8186),

Doubling Point Range Light, Front (43.8828, -69.7957),

Doubling Point Range Light, Rear (43.8848, -69.7957),

Doubling Point Light (43.8825, -69.8068),

Eagle Island Light (44.2176, -68.7678),

Egg Rock Light (44.3539, -68.1383),

Fort Point Light (44.4671, -68.8117),

Franklin Island Light (43.8921, -69.3746),

Goat Island Light (43.3579, -70.4251),

Goose Rocks Light (44.1354, -68.8307),

Great Duck Island Light (44.1420, -68.2458)

Grindel Point Light (44.2814, -69.9431),

Halfway Rock Light (43.6558, -70.0368),

Hendricks Head Light (43.8266, -69.6897),

Heron Neck Light (44.0251, -68.8622),

Indian Island Light (44.1655, -69.0610),

Isle Au Haut Light (44.0647, -68.6514),

Ladies Delight Light (44.3044, -69.8966),

Libby Island Light (44.5683, -67.3674),

Little River Light (44.6509, -67.3674),

Lubec Channel Light (44.8421, -66.9766),

Marshall Point Light (43.9174, -69.2613),

Matinicus Rock Light (44.7835, -68.8550),

Monhegal Island Light (43.7648, -69.3158),

Moose Peak Light (44.4746, -67.5320),

Mount Desert Rock Light (43.9686, -68.1283),

Narraguagus Light (44.456, -67.8312),

Nash Island Light (44.4643, -67.7473),

Owls Head Light (43.0922, -69.0440),

Pemaquid Point Light (43.8368, -69.5058),

Perkins Island Light (43.7868, -69.7853),

Petit Manan Light (44.3676, -67.8644),

Pond Island Light (43.7400, -69.7703),

Portland Breakwater Light (43.6555, -70.2349),

Portland Head Light (43.6231, -70.2079),

Prospect Harbor Point Light (44.4034, -68.0130),

Pumpkin Island Light (44.3092, -68.7428),

Ram Island Ledge Light (43.6315, -70.1874),

Ram Island Light (43.8038, -69.5992),

Rockland Harbor Breakwater Light (44.1040, -69.0775),

Saddleback Ledge Light (44.0144, -68.7264),

Saint Croix River Light (45.1282, -67.1338),

Sequin Light (43.7075, -69.7580),

Spring Point Ledge Light (43.6521, -70.2239),

Squirrel Point Light (43.8165, -69.8024),

Tenants Harbor Light (43.9611, -69.1848),

Two Bush Island Light (43.9642, -69.0739),

West Quoddy Head Light (43.1852, -69.9507),

Whaleback Light (43.0588, -70.6963),

Whitehead Light (43.9787, -69.1243),

Whitlocks Mill, LIght (45.1626, -67.2274),

Winter Harbor Light (44.3614, -68.0876),

Wood Island Light (43.4569, -70.3291).