20th century
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- 1900 – Population: 9,589; [1] county 28,625. [9]
- 1903
- 1904 – Fargo Street Railway begins operating. [8]
- 1906
- The Cass County Jail is built. [10]
- State Fair begins. [8]
- Grand Theater opens. [11]
- 1908 – St. Luke's Hospital opens.
- 1912
- April: Preacher Billy Sunday visits town. [8]
- July: Sangerfest (song festival) held. [8]
- 1914 – Princess Theatre opens. [11]
- 1915 – The Ford Building is built. [12]
- 1917
- Woodrow Wilson High School built and established.
- John Miller Baer becomes U.S. representative for North Dakota's 1st congressional district. [13]
- 1920
- Pence Automobile Company Warehouse built.
- Population: 21,961; [3] county 41,477. [9]
- 1922 – WDAY radio begins broadcasting. [1]
- 1926
- June 26: Gustaf of Sweden visits town. [8]
- Fargo Theatre built.
- 1927 – August 26: Charles Lindbergh visits town. [8]
- 1928 – Regan Brothers Bakery in business. [8]
- 1929 – Veterans' Hospital built. [1]
- 1930 – Post Office and Courthouse built. [1]
- 1931
- Black Building in Downtown Fargo is built.
- Fargo Civic Orchestra established.
- 1935 – Dovre Ski Slide erected. [1]
- 1938 – Dacotah Field opens on the North Dakota State University campus.
- 1939 – June: Olav of Norway visits town. [8]
- 1940 – November 7: Duke Ellington at Fargo, 1940 Live recorded.
- 1948
- KFGO radio begins broadcasting.
- American Crystal Sugar Company factory begins operating in nearby Moorhead, Minnesota. [14]
- The Gorman dogfight UFO incident occurs over Fargo. [15]
- 1954 – Herschel Lashkowitz becomes mayor.
- 1955 – Dacotah Field is moved to the NDSU North Campus.
- 1957 – 1957 Fargo tornado.
- 1960 – North Dakota State University active.
- 1964 – Public educational KFME (TV) begins broadcasting. [16]
- 1966 – Fargo North High School and Daughters of Dakota Pioneers [17] established.
- 1969 – Red River Valley Genealogical Society founded. [18]
- 1970
- Bison Sports Arena built.
- Population: 53,365; county 73,653. [9]
- 1972 – West Acres Shopping Center in business.
- 1974 – Sister city relationship established with Hamar, Norway. [19]
- 1975 – Plains Art Museum founded. [18] [16]
- 1978 – Jon Lindgren becomes mayor.
- 1983 – Greater Fargo-Moorhead Area Food Bank established. [20]
- 1986 – Hector Airport terminal built. [8]
- 1987 – Sister city relationship established with Vimmerby, Sweden. [19]
- 1990 – Historic Preservation Commission established.
- 1992 – Fargodome stadium opens.
- 1996
- Newman Outdoor Field opens.
- Sundog company opened for business.
- Fictional Fargo film released.
- 1997 – April: 1997 Red River flood.
- 1998 – City website online (approximate date). [21] [ chronology citation needed ]
