Actually, in the Pilot episode, since I have the script, Wilson and House are both 38 and Cuddy is 39 (which makes NO sense at all) but it's what the script says. But I think Wilson is the same age as House.
i go by this, in season five. cuddy is 38 (like she says) then house is about 45 (since i don't like him being 12 yrs older than cuddy) and wilson is somewhere in between them.
House is 50. He was born at the same year as Hugh Laurie. Cuddy's 38 makes NO SENSE cuz she was in the med school with House. She's gotta be around 44. Wilson should be younger than her (10 years younger than House), but it wasn't ever said.
maybe after house was expelled from John Hopkins he took some time off school until he got to u of m, sorry i know it has nothing to do with the wilson question