About The Main Line
The Main Line is a string of suburban neighborhoods located on what used to be the Main Line of the Pennsylvania Railroad which ran northwest into the suburbs out of downtown Philadelphia. The Main Line has a reputation of being a very affluent area, including Lower Merion Township (5th most affluent town in the country), Gladwyne (the 7th richest ZIP code in the country), and Radnor Township (the 20th most affluent township in the country).