US States With the Most Coastline

With a coastline stretching across 54,563 km, Alaska is the US state with the longest coastline.


A coastline is the length of land where it meets the ocean, marking the boundary between land and sea or ocean. A coastline is created through geologic processes such as volcanic eruptions and movements of continental plates over millions of years. Measuring the length of a coastline is a complex process as coastlines change periodically either due to tides, volcanic activity or flooding. Canada has the world's longest coastline reaching over 150,000 miles. The United States lies eighth on the global scale with a coastline of 95,471 miles. There are more than 15 states with coastlines exceeding 1,000 miles.

Coastline Of Alaska

Alaska boasts of having the longest coastline in the United States and has a longer coastline than the next 7 states combined. With a coastline stretching more for 33,904 miles, the state is surrounded by numerous seas and oceans including the Arctic to the north, the Bering Sea to the west, and the Pacific to the south.

Coastline Of Florida

The state of Florida, surrounded by the Atlantic Ocean and the Gulf of Mexico, comes second in coastline length in the US with a coastline stretching for 8,436 miles. The coastline is popular for its amazing beaches which attract millions of visitors including the famous Cocoa and Palm beaches. In 2015, Florida received 105 million tourists, the first time the state surpassed the 100-million mark. In 2016 there were 112.8 million. The state of Florida has set tourism records for six successive years.

Coastline Of Louisiana

The state of Louisiana is bordered by the Gulf of Mexico to its south and has a coastline stretching 7,721 miles. The coastline has seen a rapid decline over the recent past due to human activity and compounded by rising sea levels caused by global warming. The state is currently losing an area of 25 square miles per year.

Coastline Of Hawaii

Hawaii is home to one of the most recently-formed coastlines in the US. The islands of Hawaii were formed due to a continuous undersea volcanic activity which is still ongoing to this date. This means the coastline is experiencing annual expansion. Of the numerous islands that make up the state, the island of Hawaii, or Big Island as it is often referred to, has the longest coastline. Hawaii has a coastline covering a distance of 1,052 miles long.

Benefit Of Coastlines

An extensive coastline has many economic benefits to a country. A long coastline signifies a large area for fishing. Alaska, which has the longest coastline, has the biggest fishing production in the US. An extensive coastline also signifies a large area for offshore oil exploration. Coastlines play an important role in a country’s economy as tourist attractions Coastlines also provide a perfect location for the establishment of marine parks. The coastlines also have environmental benefits as they provide a natural barrier between human habitation and the sea and minimize the impact of hurricanes and cyclones.

Which State Has the Longest Coastline in the US?

Alaska has the longest coastline in the United States.

US States By Length Of Coastline

RankUS StateCoastline Length
1 Alaska33,904 mi (54,563 km)
2 Florida8,436 mi (13,576 km)
3 Louisiana7,721 mi (12,426 km)
4 Maine3,478 mi (5,597 km)
5 California3,427 mi (5,515 km)
6 North Carolina3,375 mi (5,432 km)
7 Texas3,359 mi (5,406 km)
8 Virginia3,315 mi (5,335 km)
9 Michigan3,224 mi (5,189 km)
10 Maryland3,190 mi (5,130 km)
11 Washington3,026 mi (4,870 km)
12 South Carolina2,876 mi (4,628 km)
13 New York2,625 mi (4,225 km)
14 Georgia2,344 mi (3,772 km)
15 New Jersey1,792 mi (2,884 km)
16 Massachusetts1,519 mi (2,445 km)
17 Oregon1,410 mi (2,270 km)
18 Hawaii1,052 mi (1,693 km)
19 Wisconsin820 mi (1,320 km)
20 Connecticut618 mi (995 km)
21 Alabama607 mi (977 km)
22 Rhode Island384 mi (618 km)
23 Delaware381 mi (613 km)
24 Mississippi359 mi (578 km)
25 Ohio312 mi (502 km)
26 Minnesota189 mi (304 km)
27 Pennsylvania140 mi (230 km)
28 New Hampshire131 mi (211 km)
29 Illinois63 mi (101 km)
30 Indiana45 mi (72 km)


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