Kirsten Baker as June

Linda Lawrence as Betty

Sandy Johnson as April

Rikki Marin as January

Leslie King as Jane

Demetre Phillips as Hank

Steve Bond as Butch

Ken Lerner as Peewee

Dave Shelley as Mr. Friendly

Huntz Hall as Uncle Joe

Joe E. Ross as Bruno

Mike Mazurki as Moiv

Dennis Bowen as Roger

Robert Kenneally as Hal

Paul Tinder as Michael

"Cousin Brucie" Morrow as Deejay

Michael Alden as Driver

Morris Buchanan as Big Sam

Kay Elliot as Miss Bellows

Norman Fields as Louie

Loutz Gage as Dr. Schwartz

John F. Goff as Redneck

Jack Jozefson as Mr. Smin

Brett Lewis as Attendant

Bill Lytle as School Guard

John Majesko as Attendant

Eileen Marek as Aunt Harriet

Clifford Martin III as Goofy Guy

Peter Spitzer as Mr. Dellwood

Robert Sutton as Burly Attendant

Bruce Dowling as Beach Ball Station Attendant (uncredited)