The following is a list of known sources and Earliest Known Appearances for when Sesame Street characters made their debut on the show.

Season 1 (1969-1970)

Season 2 (1970-1971)

Season 3 (1971-1972)

Season 4 (1972-1973)

Season 5 (1973-1974)

Season 6 (1974-1975)

Season 7 (1975-1976)

Season 8 (1976-1977)

Season 9 (1977-1978)

Season 10 (1978-1979)

Season 11 (1979-1980)

Season 12 (1980-1981)

Season 13 (1981-1982)

Season 16 (1984-1985)

Season 17 (1985-1986)

Season 18 (1986-1987)

Season 19 (1987-1988)

Season 20 (1988-1989)

Season 21 (1989-1990)

Season 22 (1990-1991)

Season 23 (1991-1992)

Season 24 (1992-1993)

Season 25 (1993-1994)

Season 29 (1997-1998)

Season 30 (1998-1999)

Season 31 (2000)

Season 32 (2001)

Season 34 (2003)

Season 36 (2005)

Season 37 (2006)

Season 38 (2007)

Season 39 (2008)

Season 41 (2010)

Season 44 (2013-2014)

Season 46 (2016)

Season 47 (2017)

  • Julia — While the character first appeared in 2015, her Muppet form debuts on the show in Episode 4715.

See also