

As of the 2020 census, it had a population of 5,879.

They became home to sprawling country estates belonging to Philadelphia's wealthiest families during the Gilded Age, and over the decades became a bastion of old money. Route 30.īryn Mawr is located toward the center of what is known as the Main Line, a group of affluent Philadelphia suburban villages stretching from the city limits to Malvern. It is located just west of Philadelphia along Lancaster Avenue, also known as U.S. National Register of Historic Placesīryn Mawr / ˌ b r ɪ n ˈ m ɑː r/, from Welsh for 'big hill', is a census-designated place (CDP) located across three townships: Radnor Township and Haverford Township in Delaware County, and Lower Merion Township in Montgomery County, Pennsylvania, United States.
