Maine.
Maine is the New England state with the longest coastline along the Atlantic Ocean. It has 228 miles of coastline.
Texas the second largest state!(:
Florida has the largest coastline of any east-coast state in the U.S., though the exact number of miles and methods of measurement are greatly varied. However, a great majority of Florida's coastline is actually against the Gulf of Mexico, and not technically the Atlantic Ocean. The state with the largest coastline touching only the Atlantic Ocean would probably be North Carolina. Again, the methods and the measurements thereof vary depending on source.
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The state of Maine has the longest coastline on the Atlantic Ocean, at around 3,500 miles. Its capital city is Augusta.
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Maine
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North Carolina has the 2nd longest Atlantic coastline at 301 miles. Alaska has the longest coastline of any state with 6,640 miles bordering the Pacific and Arctic Oceans. Florida is 2nd (longest Atlantic coastline) with 1,350 miles bordering the Atlantic Ocean and Gulf of Mexico.
The province of Québec, which is Canada's largest province by area, has Atlantic Ocean coastline. The province of Newfoundland and Labrador, however, is smaller in area but has more Atlantic coastline -- approximately 29,000 kilometers. Canada has the longest coastline of any country in the world. Her saltwater coastline is 243 797 km. Canada also has a freshwater coastline along the Great Lakes of 3800 km.