Philadelphia Metro Area Counties

11 counties · 6.3 million people (2025) · 4,603 sq mi

The Philadelphia metro area (officially the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area) has 11 counties in Delaware, Maryland, New Jersey and Pennsylvania, with 6,329,118 people in 2025. Philadelphia County is the most populous.

Map of the 11 counties of the Philadelphia metro area with county names and major cities
The 11 counties of the Philadelphia metro area (yellow) with the largest cities. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
PDF (Letter) 319 KBPNG (2400 px) 180 KB

The 11 counties of the Philadelphia metro area

Sorted by population.

CountyStateCounty seatPopulation 2025Change since 2020Land area (sq mi)Type
Philadelphia CountyPennsylvaniaPhiladelphia1,574,281−1.8%134Central
Montgomery CountyPennsylvaniaNorristown877,643+2.5%483Central
Bucks CountyPennsylvaniaDoylestown647,828+0.2%604Central
New Castle CountyDelawareWilmington588,026+3%426Central
Delaware CountyPennsylvaniaMedia580,937+0.7%184Central
Chester CountyPennsylvaniaWest Chester557,116+4.3%751Central
Camden CountyNew JerseyCamden535,799+2.4%221Central
Burlington CountyNew JerseyMount Holly481,439+4.2%799Central
Gloucester CountyNew JerseyWoodbury312,638+3.4%322Central
Cecil CountyMarylandElkton107,131+3.3%346Central
Salem CountyNew JerseySalem66,280+2.3%332Central

The metro area is part of the larger Philadelphia-Reading-Camden, PA-NJ-DE-MD Combined Statistical Area.

Printable map

The PDF is a vector file for Letter paper; the PNG is 2400 pixels wide. Both are free to use with a credit to WhichCounty.

County maps of Delaware, Maryland, New Jersey and Pennsylvania

Other metro areas

Sources