Jimmy Fallon is 50 years and 2 month(s) old. He was born in 19 Sep, 1974. The American comedian, TV host, actor, singer, writer and producer Jimmy Fallon was born on 19 September 1974 in New York City, according to his biography. Jimmy Fallon was born in the Bay Ridge neigbourhood in the Brooklyn borough of New York City. He was born to parents Gloria Fallon (née Feeley), his mother, and to father James W. Fallon. Jimmy Fallon is of Irish, German and Norwegian descent.