I don't know, but on the TV show, both Oscar and Felix were World War II veterans, which would have made them at least in their mid-40's.
=== === === === Oscar Madison in TV's The Odd Couple
Roy is Oscar's accountant
Season 1, Episode 6, "Oscar's Ulcer"
Frances in the play and film and Gloria in the TV show.
The TV show The Odd Couple was based on Neil Simon's Broadway play of the same name. Garry Marshall was the man behind the series. Note of interest:Oscar's secretary Myrna was played by a pre-Laverne and Shirley Penny Marshall who was related to Gary Marshall.
Unger. Foil meaning opposite. Oscar Madison's foil was Felix Unger in the play The Odd Couple.
Madison
=== === === === Oscar Madison in TV's The Odd Couple
=== === === === Oscar Madison in TV's The Odd Couple
In 1968 a film version of the stage play of The Odd Couple, which starred Jack Lemmon as Felix and Walter Matthau as Oscar. PCH ANSWER: WALTER MATTAU
Blanche (She was played by Jack Klugman's real-life wife, Brett Sommers.)
In Neil Simon's "The Odd Couple," the character who lives upstairs from Felix Unger and Oscar Madison is a woman named Muriel. She is Felix's ex-wife, and her presence adds to the tension in the story, particularly concerning Felix's emotional state and his past relationship. The dynamic between the characters contributes to the comedic and poignant moments of the play.
Oscar MadIson's mate on "the Odd Coupe" was Feix UNGER
Oscar is sloppy and casual .
Penny Marshall, who late went on to co-star in Laverne and Shirley.
Roy is Oscar's accountant
The Odd Couple is a play by Neil Simon.