The list below shows cities that have been represented in Northern League baseball.
St. Boniface is now a district of Winnipeg. In 1971, the Manitoba legislature passed a law combining Winnipeg and eleven of its suburbs (one of which was St. Boniface) into a single municipality, the city of Winnipeg.
The cities of Fort William and Port Arthur, along with the townships of McIntyre and Neebing, merged in 1970 to form the city of Thunder Bay.
| Aberdeen (South Dakota) |
Pheasants 1946-1971 |
| Bismarck-Mandan (North Dakota) |
Pards 1962-1964, 1966 |
| Brainerd (Minnesota) |
Muskies 1935 |
| Brainerd-Little Falls (Minnesota) |
Muskies 1934 |
| Brandon (Manitoba) |
Angels 1908; Greys 1933 |
| Cavalier (North Dakota) |
(no nickname) 1902 |
| Crookston (Minnesota) |
Crooks 1902-1905; Pirates 1933-1941 |
| Devils Lake (North Dakota) |
(no nickname) 1902 |
| Duluth (Minnesota) |
Cardinals 1903; White Sox 1904-1905, 1908, 1913-1916; Dukes 1934-1942, 1946-1955 |
| Duluth-Superior (Minnesota-Wisconsin) |
White Sox 1956-1958; Dukes 1959-1970, 1993-1997 |
| East Grand Forks (Minnesota) |
Colts 1933 |
| Eau Claire (Wisconsin) |
Cardinals/Bears 1933; Bears 1934-1942, 1946-1953; Braves 1954-1962 |
| Fargo (North Dakota) |
(no nickname) 1902-1905; Browns 1908 |
| Fargo-Moorhead (North Dakota-Minnesota) |
Graingrowers 1914-1917; Twins 1933-1942, 1946-1960; RedHawks 1996-1997 |
| Ft. William-Pt. Arthur (Ontario) |
Canucks 1914-1915; Canadians 1916 |
| Grand Forks (North Dakota) |
Forkers 1902-1905; Flickertails 1913-1915; Chiefs 1934-1935, 1938-1942, 1946-1964 |
| Huron (South Dakota) |
Phillies 1965-1968; Cubs 1969-1970 |
| Jamestown (North Dakota) |
Jimmies 1936-1937 |
| La Crosse (Wisconsin) |
Colts 1913 |
| Madison (Wisconsin) |
Black Wolf 1996-1997 |
| Mankato (Minnesota) |
Mets 1967-1968 |
| Minneapolis (Minnesota) |
Millers 1913 |
| Minot (North Dakota) |
Why Nots 1917; Mallards 1958-1960, 1962 |
| Rochester (Minnesota) |
Aces 1993 |
| Sioux City (Iowa) |
Explorers 1993-1997 |
| Sioux Falls (South Dakota) |
Canaries 1942, 1946-1953; Packers 1966-1971; Canaries 1993-1997 |
| St. Boniface (Manitoba) |
Saints/Bonnies 1915 |
| St. Cloud (Minnesota) |
Rox 1946-1971 |
| St. Paul (Minnesota) |
Saints 1993-1997 |
| Superior (Wisconsin) |
Longshoremen 1903-1905; Red Sox 1913-1916; Blues 1933-1942, 1946-1955 |
| Thunder Bay (Ontario) |
Whiskey Jacks 1993-1997 |
| Virginia (Minnesota) |
Ore Diggers 1913-1916 |
| Warren (Minnesota) |
Wanderers 1917 |
| Watertown (South Dakota) |
Expos 1970-1971 |
| Wausau (Wisconsin) |
Lumberjacks 1936-1942, 1956-1957 |
| Winnipeg (Manitoba) |
Maroons 1902-1905, 1908, 1913-1917, 1933-1942; Goldeyes 1954-1964, 1969, 1993-1997 |
| Winona (Minnesota) |
Pirates 1913-1914 |