Belmar Mayor Ken Pringle won't seek re-election in November after 20 years in office.
Pringle says he was not asked by Democratic Party bosses to step down because of his "tongue-in-cheek" comments about summer visitors in 2008.
Pringle portrayed Staten Island women as heavily hair-sprayed blondes holding drinks and called men "guidos."
During his tenure in Belmar, Pringle ushered a 2001 ban on smoking on borough beaches. He also took steps to transform the small shore community from a summer party town to a family destination.
Anger over the blog posting came on the heels of MTV's reality show "Jersey Shore" that takes place in the nearby town of Seaside Heights.
The show focuses on the escapades of eight 20-somethings thrown together at a summer shore house. The stars are mostly Italian-Americans.
Italian-American civic groups and New Jersey lawmakers have voiced their outrage since the show's first airing, claiming the show perpetuates negative stereotypes.
The town insists the show doesn't reflect the majority of its visitors.