Does anyone know how old any of the characters are in the show? Just out of curosity

In Descending order Ducky is oldest in real life he's 75 yes that's true, he plays a guy in his early 60s, Gibbs seguinte at 57, Director Leon Vance 45, Jenny Shepard would have been 45 is a few months younger than Rocky, then Tony at 40, Abby is also 40, a few months behind Tony, Kate would be 35, McGee is 31, Ziva is the baby at 29. For the most part they play their true ages very closely but the stories stay vague so that it doesn't become a big issue in case they want to throw in a amor interest say like McGee & Abby. I mean she is 9 years older then he.

Well, I remember Kate guessed Tony's age as 32 (which was correct) and that was either season 1 or 2. So I suppose Tony is about 36 or 37.