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Atlantic Ocean U.S. Island High Points above 150 feet

RankIslandPeak Elev-M
StateIsol-KmAscent Date
1.Mount Desert IslandCadillac Mountain466Maine140.1 
2.Isle au HautMount Champlain166Maine32.5 
3.Staten IslandTodt Hill126New York22.7 
4.Long IslandJaynes Hill119New York34.2 
5.Martha's VineyardMarthas Vineyard High Point95Massachusetts48.0 
6.Aquidneck IslandQuaker Hill87Rhode Island9.3 
7.ManhattanManhattan High Point81New York5.8 
8.Swans IslandGoose Pond Mountain73Maine16.8 
9.Great Spruce Head IslandThe Head69Maine13.0 
10.Long Island [Frenchboro]Long Island High Point67Maine6.0 
11.Block IslandBeacon Hill64Rhode Island24.8 
12.Jordan IslandJordan Island High Point64Maine6.7 
12.Sebascodegan IslandReach Mountain64Maine8.0 
12.Roque IslandRoque Benchmark64Maine33.4 
15.Bar Island [Machiasport]Bar Island High Point62Maine22.5 
15.Sears IslandSears Island High Point62Maine11.0 
17.Butler IslandBig Mountain60Maine2.5 
17.Conary IslandConary Island High Point60Maine13.2 
17.Head Harbor IslandMoose-A-Bec Benchmark60Maine9.4 
20.Isleboro IslandKedears Hill59Maine5.6 
21.Cross IslandCross Island High Point59Maine6.8 
22.Seward Neck IslandSeward Neck Island High Point59Maine5.8 
23.Bald Porcupine IslandWheeler Benchmark58Maine3.3 
24.Kimball IslandKimball Island High Point57Maine2.7 
25.Prudence IslandPrudence Island High Point56Rhode Island5.1 
25.Shelter IslandShelter Island Heights56New York12.9 
27.Bois Bubert IslandBois Bubert Island High Point54Maine2.2 
28.Hog Island [Essex Co.]Choate Benchmark54Massachusetts5.3 
29.Barters IslandBarters Island High Point53Maine3.5 
29.Deer IsleWhitmore Neck53Maine6.1 
31.Naushon IslandMount Surat53Massachusetts13.9 
32.Bar Island [Gouldsboro]Bar Island Summit53Maine2.3 
33.Calderwood Neck IslandCalderwood Neck Island High Point52Maine5.1 
33.Preble IslandPreble Island High Point52Maine6.7 
33.Westport Island Westport Island High Point52Maine7.4 
36.Monhegan IslandBlack Head50Maine26.1 
36.Long Porcupine IslandLong Porcupine Island High Point50Maine2.0 
38.Hurricane IslandHurricane Island High Point50Maine7.3 
39.Bradbury IslandBradbury Island High Point49Maine3.4 
40.Black IslandBlack Island High Point49Maine6.3 
41.Pond IslandPond Island High Point48Maine3.4 
42.Burnt IslandBurnt Island High Point48Maine10.5 
43.Arrowsic IslandArrowsic Island High Point47Maine7.0 
43.Eagle Island [Hancock Co.]Eagle Island High Point47Maine2.6 
43.North Haven IslandOak Hill47Maine6.4 
43.Southport IslandSouthport Island High Point47Maine6.5 
47.Great Chebeague IslandGreat Chebeague Island High Point46Maine14.9 
48.Nashawena IslandNashawena Island High Point46Massachusetts12.1 
49.Seguin IslandSeguin Island High Point46Maine11.9 

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List Description

Most of the islands (38 our of 49, or 78%) on this list are in Maine. There are no islands over 150 feet high on the USA Atlantic seaboards south of New York harbor.


Thanks to Dave Covill, who did a great deal of exhaustive data entry to get this list complete.


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