Bryn Mawr
Census-designated place
Pembroke Hall on the campus of Bryn Mawr College
Country	United States
State	Pennsylvania
County	Montgomery
Township	Lower Merion
Elevation	420 ft (128 m)
Coordinates	40°01′16″N 75°19′01″W / 40.02111°N 75.31694°W / 40.02111; -75.31694
Area	0.6 sq mi (1.6 km2)
- land	0.6 sq mi (2 km2)
- water	0.0 sq mi (0 km2), 0%
Population	3,779 (2010)
Density	6,298.3 / sq mi (2,431.8 / km2)
Timezone	EST (UTC-5)
- summer (DST)	EDT (UTC-4)
ZIP Code	19010
Area code	610
Location of Bryn Mawr in Pennsylvania
Location of Pennsylvania in the United States

Bryn Mawr (pronounced /ˌbrɪnˈmɑːr/;^[1] from Welsh for "big hill") is a census-designated place (CDP) in Lower Merion Township, Montgomery County, Pennsylvania, just west of Philadelphia along Lancaster Avenue (US-30) and the border with Delaware County. Bryn Mawr is located towards the center of what is known as the Main Line, a group of picturesque and affluent Philadelphia suburbs stretching from the city limits to Malvern. As of the 2010 census, it had a population of 4,382. Bryn Mawr is home to Bryn Mawr College.

The name Bryn Mawr means "big hill" in Welsh and takes its name from an estate near Dolgellau in North Wales. This was the farm of Rowland Ellis, who emigrated to Pennsylvania from Dolgellau in 1686 to escape religious persecution.^[2][3]

Until 1869 and the coming of the Pennsylvania Railroad, the town was known as Humphreysville. The town was renamed by railroad agent William H. Wilson after he acquired on behalf of the railroad the 283 acres (1.15 km²) that now comprise Bryn Mawr.

In 1893, the first hospital, Bryn Mawr Hospital, was built on the Main Line by Dr. George Gerhard.

Part of Bryn Mawr is located in Delaware County, located at the coordinates 40°1' 25.0212"N 75°19' 46.1676"W, its zip code is 19010 with a total population of 3,779. ^[7]

However, the "Bryn Mawr" zip code (19010) covers a larger area, and as a result, the geographic term "Bryn Mawr" is often used in a sense that includes not only the CDP, but also other areas that share the zip code. These other areas include the community of Rosemont within Lower Merion Township and Radnor Township, and various other areas within Lower Merion Township, Radnor Township, and Haverford Township. Bryn Mawr is a part of the Philadelphia Main Line, a string of towns located along a rail road that leads to downtown Philadelphia. Other towns include, Lower Merion, Radnor, Villanova. As of the 2000 Census, the Bryn Mawr ZIP code was home to 21,485 people with a median family income of $110,956.^[8][9]

Bryn Mawr residents of Lower Merion Township attend schools in the Lower Merion School District; all residents of the Bryn Mawr CDP are in Lower Merion Township and therefore attend LMSD schools.

Bryn Mawr address residents of Radnor Township attend schools in the Radnor Township School District; Radnor High School is the district's sole high school.