1998 | 5 Episodes

Season 0 of Codename: Kids Next Door premiered on November 6, 1998.

2002 | 26 Episodes

Season 1 of Codename: Kids Next Door premiered on December 6, 2002.

2003 | 25 Episodes

Season 2 of Codename: Kids Next Door premiered on October 3, 2003.

2004 | 23 Episodes

Season 3 of Codename: Kids Next Door premiered on June 11, 2004.

2004 | 22 Episodes

Season 4 of Codename: Kids Next Door premiered on November 19, 2004.

2005 | 22 Episodes

Season 5 of Codename: Kids Next Door premiered on September 30, 2005.

2006 | 21 Episodes

Season 6 of Codename: Kids Next Door premiered on September 8, 2006.