Largest Glaciers in the US

While iconic alpine glaciers cling to the volcanic summits of the Pacific Northwest and the rugged valleys of the northern Rocky Mountains, more than 95% of the nation’s glacial mass rests entirely within Alaska. Fed by massive coastal snowpacks and towering mountain ranges, these colossal rivers of ice scale up to dimensions that defy expectations—with individual Alaskan systems spanning areas larger than entire US states. The following table ranks the top 10 largest glaciers in the United States.

Rank	Glacier / Complex Name	Area (sq mi)	Location	Notable Fact
1	Malaspina-Seward Complex	~1,300	Alaska, USA	The world’s largest piedmont glacier, spilling out of the mountains into a massive lobe.
2	Bering Glacier	~1,150	Alaska, USA	Combined with the Bagley Icefield, it forms the longest and largest single glacier system in North America.
3	Hubbard Glacier	~950	Alaska, USA	A massive tidewater glacier famous for actively advancing and thickening rather than retreating.
4	Brady Glacier	~210	Alaska, USA	A massive, sprawling ice plateau that sits just inland from the Pacific coast in Glacier Bay.
5	Grand Pacific Glacier	~135	Alaska, USA	A massive trans-boundary ice stream shared directly with British Columbia.
6	Columbia Glacier	~130	Alaska, USA	One of the fastest-moving and most heavily calving glaciers in the world, located in Prince William Sound.
7	Guyot Glacier	~115	Alaska, USA	Feeds directly into Icy Bay and is known for its dramatic, towering ice-cliff face.
8	Taku Glacier	~110	Alaska, USA	The deepest and thickest alpine temperate glacier in the world, measuring roughly 4,845 feet thick.
9	Yahtse Glacier	~105	Alaska, USA	A highly active tidal glacier flanked by the steep coastal walls of Mount St. Elias.
10	Martin River Glacier	~90	Alaska, USA	Notable for its heavily debris-covered lower terminus, which supports growing vegetation on top of the ice.