Area code 313 is the telephone area code serving the city of Detroit, Michigan, the city's innermost enclave cities (Hamtramck and Highland Park), and Dearborn, Redford and Grosse Pointe. Until December 1, 1993, it served the entire southeast Michigan region, including Metro Detroit, Flint, and the southern part of Michigan's "Thumb", but demand for new phone numbers led to the creation of the new area code 810 for the northern suburbs, Flint, and the southern Thumb. Later, that area would be subdivided further, into 248, largely serving Oakland County, and 586, covering Macomb County. On December 13, 1997, the 313 area was further divided creating the 734 area out of Washtenaw, Monroe, and western Wayne counties.

The area code has been used as a cultural identifier of inner-city Detroit. Rapper Eminem's debut album, Infinite, contains a track titled "313", and in Eminem's movie 8 Mile, "the 313" is used in the protagonist's final rap battle as a toponym to identify those culturally connected to run-down parts of Detroit. His old rap group was called "313." The group 3 1/3 mentioned in the movie is a reference to the area code. This area code was also used in the University of Rochester's Office of Admissions video, Remember our Name. This video provides prospective students an array of Rochester facts and figures with a hip-hop twist. The video and the music was performed by campus all-male a cappella group the Midnight Ramblers.

Robert "Bob" Gibson (born November 9, 1935) is a retired American baseball pitcher who played 17 seasons in Major League Baseball (MLB) for the St. Louis Cardinals (1959–1975). Nicknamed "Hoot" and "Gibby", Gibson tallied 251 wins, 3,117 strikeouts, and a 2.91 earned run average (ERA) during his career. A nine-time All-Star and two-time World Series champion, he won two Cy Young Awards and the 1968 National League (NL) Most Valuable Player (MVP) Award. In 1981, he was elected to the Baseball Hall of Fame in his first year of eligibility.

Born in Omaha, Nebraska, Gibson overcame childhood illness to excel in youth sports, particularly basketball and baseball. After briefly playing under contract to both the basketball Harlem Globetrotters team and the St. Louis Cardinals organization, Gibson decided to only continue playing baseball professionally. Once becoming a full-time starting pitcher in July 1961, Gibson began experiencing an increasing level of success, earning his first All-Star appearance in 1962. Gibson won two of three games he pitched in the 1964 World Series, then won 20 games in season for the first time in 1965. Gibson also pitched three complete game victories in the 1967 World Series.