Tribes of Lenape were the first known occupants in the area which became Philadelphia County.

Philadelphia County is by far the most Democratic county in Pennsylvania.

It is also the newspaper of record for legal notice filings, such as sheriff's sales and incorporation notices, in Philadelphia County.

He was appointed as the solicitor of Philadelphia County, serving from 1822 to 1825.

In 1816 he was elected sheriff of Philadelphia County, serving until 1819.

He served as sheriff of Philadelphia County from 1916 to 1920.

Other private schools in Philadelphia County compete in District 1.

The 1790 census is the first in Philadelphia County that lists slaveholders by name.

Initially the township was part of Philadelphia County.

Philadelphia County, by contrast, is all city, with 1.6 million people and 404 murders.