Even though some others have said Phineas ^ it's actually Ferb who is the eldest, not counting Candace. He was apparently three when Lawrence Fletcher married Linda Flynn, and Phineas there being two while Candace was six. When Phineas was born, Candace was age of four. The proven age of Phineas(though it has not been said, but we can assume) is twelve, because that is the legal age to sit in the shotgun side of the car, and he has sat in that 좌석 before. His age has got to be twelve of up,(he does not seem of a thirteen-year-old) because the creators would not break a law in a child's TV show. Therefor, what I am trying to say is that Phineas is twelve, Ferb is either a little bit over twelve 또는 thirteen. In other words, Ferb is older than Phineas 의해 a few months 또는 a year.
Glad I could help (:
posted over a year ago
But I heard that he was 9 in the Original Pitch. So maybe he's 10 또는 11 that's what I though but 12 sounds good too.
O_O Ferb IS older but Phineas IS 10 또는 11.. He turned 11 a few days ago... I think so... The writers said he turns 11 after 크리스마스 (the 크리스마스 we just had.) Which means that he was born in 2000.They said he turned 11 then. It said he was 9 when the show first started, Its been on for 3 years so he COULD have either just now turned 11 또는 12.. so there... He could have just turned 12 a few days ago. (I know his birthday,, I do a lot of research) So.. he is probably 11 또는 12 right now...
Phineas and Ferb are 9 in the third grade because in S4 E8: Primal Perry, Baljeet is having trouble making decisions and says that he was filling out applications for college. Phineas says that college is 9 years away thus making the boys 9 years old.
This also supports Candace being 15, 6 years older, because in S4 E47: Act Your Age, we see Phineas trying to choose a college and at one point they flash 앞으로 to Candace in law school which comes after your first four years of college. That proves she's AT LEAST 5 years older though I believe it to be 6 because her vibe is that, 더 많이 so, of a high schooler than an 8th grader.