- Location
Currently, the “209 area code” serves ‘all or portions’ of counties from “Central, North Central, and Bay” region of California and is a ‘telephone area code.’ After being separated from the ‘415 area code’ (one of the three original area codes given to California in 1948) in 1958, the ‘209 area code’ was established. Further in 1999, the area was divided in half by creating the ‘559 area code’ out of 209.