Page "Marge Simpson" Paragraph 4

As with many Simpsons characters, Marge's age changes to serve the story.

In season one ( 1990 ) episodes " Life on the Fast Lane " and " Some Enchanted Evening ", Marge was said to be 34.

In " Regarding Margie " ( season 17, 2006 ), Homer mentioned that Marge was his age, meaning she could have been anywhere between 36 and 40.