215 and 267 are the North American telephone area codes for the City of Philadelphia and the northern and eastern municipalities in Bucks and Montgomery Counties in the Commonwealth of Pennsylvania. Area code 215 was one of the original area codes established in 1947 and originally included the entire southeastern part of the Commonwealth, from the Delaware border to the Lehigh Valley. Pennsylvania was divided into four numbering plan areas, after New York state the most in the Bell System, together with Illinois, Ohio, and Texas.