I just started wathing real world when it was brooklyn and I was wondering how many seasons there are and what cities their in.

Brooklyn was the 21st season, and we are currently in the 24th season in New Orleans, which was also held during season 9 of The Real World. There's a full senarai of all the other seasons on wikipedia.

Real World has only been on for 18 years it started in 1992 however we are in s24 because later on in the tunjuk they seem be having 2 atau lebih seasons a tahun now in stead of one season each year.