The United States and its territories have a total area of more than *** million square miles - of this, ** square miles (around seven percent of the total) is made up of water area, such as rivers, lakes, and inlets, as well as territorial waters along the coast.
Alaska, the largest state, has the largest water area by a significant margin, at almost * square miles (35 percent of the country's total). This is followed by Michigan, which has over * square miles of water area - the majority of this comes form the Great Lakes, as large shares of Lake Huron, Lake Michigan, and Lake Superior fall within Michigan's boundaries.
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ProQuest. (December 31, 2019). Surface area of water in each state or territory of the United States in 2018 (in square miles) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 17, 2026, from /statistics/379294/us-water-area-state-type/
ProQuest. "Surface area of water in each state or territory of the United States in 2018 (in square miles)." Chart. December 31, 2019. ÌÇÐÄÆƽâ°æ. Accessed July 17, 2026. /statistics/379294/us-water-area-state-type/
ProQuest. (2019). Surface area of water in each state or territory of the United States in 2018 (in square miles). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 17, 2026. /statistics/379294/us-water-area-state-type/
ProQuest. "Surface Area of Water in Each State or Territory of The United States in 2018 (in Square Miles)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 31 Dec 2019, /statistics/379294/us-water-area-state-type/
ProQuest, Surface area of water in each state or territory of the United States in 2018 (in square miles) ÌÇÐÄÆƽâ°æ, /statistics/379294/us-water-area-state-type/ (last visited July 17, 2026)
Surface area of water in each state or territory of the United States in 2018 (in square miles) [Graph], ProQuest, December 31, 2019. [Online]. Available: /statistics/379294/us-water-area-state-type/
