1994 | 1 Episodes

Season 0 of Hey Arnold! premiered on June 15, 1994.

1996 | 38 Episodes

Season 1 of Hey Arnold! premiered on October 7, 1996.

1997 | 37 Episodes

Season 2 of Hey Arnold! premiered on September 22, 1997.

1998 | 38 Episodes

Season 3 of Hey Arnold! premiered on August 31, 1998.

1999 | 31 Episodes

Season 4 of Hey Arnold! premiered on March 10, 1999.

2001 | 42 Episodes

Season 5 of Hey Arnold! premiered on March 4, 2001.