Twin Ports

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Coordinates: 46°44′56″N 92°05′24″W / 46.749°N 92.090°W / 46.749; -92.090

U.S. Census Bureau Areas
Duluth-Superior (MN-WI) map.svg
Duluth MSA, MN-WI[1]
Population 279,815 (US: 165th)[2]
Largest city Duluth
Other cities Superior - Cloquet - Carlton - Hermantown - Proctor - Rice Lake - Scanlon
Density 1,277.11/sq mi.[3] (371.13/km²)
Area 219.1 total sq mi. (753.95 km²)
Counties Saint Louis · Carlton (MN)  · Douglas (WI)
Area codes 218 · (MN) 715 (WI)

The Twin Ports of Duluth, Minnesota and Superior, Wisconsin, are located at the western part of Lake Superior (the westernmost of North America's Great Lakes) and together are considered the largest freshwater port in the world.[4] They are twin cities and seaports, connected to the Atlantic Ocean through the Great Lakes and the Saint Lawrence Seaway.

1915 Panoramic map of the Twin Ports, Superior on the left and Duluth on the right, by Henry Wellge

The Twin Ports are at the core of the U.S. Census Bureau's "Duluth, MN-WI Metropolitan Statistical Area",[5] which includes all of Wisconsin's Douglas County, and Minnesota's Carlton and Saint Louis counties. With a 2010 census population of 279,771, the Duluth MSA ranked as the 165th largest metropolitan area in the United States.

The area is home to two long bridges: the Richard I. Bong Memorial Bridge (carrying U.S. Highway 2) and the John Blatnik Bridge (carrying I-535 and U.S. Highway 53).[6] Each bridge reaches across more than 1.5 miles (2.5 km) across the mouth of the Saint Louis River.[6] The Aerial Lift Bridge was constructed in 1905 and is on the National Register of Historic Places. It must be raised each time a vessel enters or leaves Duluth's harbor; the inlet on the Wisconsin side is not similarly obstructed.

Together, the cities rank as the 19th-busiest port in the country overall (44.2 million short tons [40.1 million tonnes] per year) as of 2002, though the area is the 7th-busiest port (13.8 million short tons [12.5 million tonnes] per year) when measured on foreign exports alone.

See also[edit]


  1. ^ U.S. Census Bureau Geography Division, Cartographic Products Management Branch (December 2005). "Metropolitan and Micropolitan Statistical Areas of the United States and Puerto Rico". Retrieved 2007-05-09.
  2. ^ "Table 20. Large Metropolitan Statistical Areas--Population". 2010 Census. United States Census Bureau. Retrieved 27 October 2011.
  3. ^ U.S. Census Bureau American Fact Finder (2000). "Geographic Comparison Table: United States and Puerto Rico – Metropolitan Area". Archived from the original on 2020-02-13. Retrieved 2007-05-08. dead link
  4. ^ Duluth Seaway Port Authority. "Port of Duluth-Superior". Retrieved 2019-01-05.
  5. ^ Minnesota
  6. ^ a b "Bong Bridge facts". Duluth News Tribune. Retrieved 2020-04-25.

External links[edit]