The following is a list of the 67

counties A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

of the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...

Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...

. The city of

Philadelphia Philadelphia ( ), colloquially referred to as Philly, is the List of municipalities in Pennsylvania, most populous city in the U.S. state of Pennsylvania and the List of United States cities by population, sixth-most populous city in the Unit ...

is coterminous with

Philadelphia County Philadelphia County is the most populous of the 67 counties of Pennsylvania and the 24th-most populous county in the nation. As of the 2020 census, the county had a population of 1,603,797. It is coextensive with Philadelphia, the nation's ...

, the municipalities having been consolidated in 1854, and all remaining county government functions having been merged into the city after a 1951 referendum. Eight of the ten most populous counties are in the southeastern portion of the state, including four out of the top five, and eight of the top ten most populous counties are in either the

Greater Philadelphia The Philadelphia metropolitan area, also known as Greater Philadelphia and informally called the Delaware Valley, the Philadelphia tri-state area, and locally and colloquially Philly–Jersey–Delaware, is a major metropolitan area in the Nor ...

Greater Pittsburgh Greater Pittsburgh is the metropolitan area surrounding the city of Pittsburgh in Western Pennsylvania, United States. The region includes Allegheny County, Pittsburgh's urban core county and economic hub, and seven adjacent Pennsylvania cou ...

Metropolitan Statistical Areas.

FIPS code

The

Federal Information Processing Standard The Federal Information Processing Standards (FIPS) of the United States are a set of publicly announced standards that the National Institute of Standards and Technology (NIST) has developed for use in computer systems of non-military United Stat ...

(FIPS) code, used by the

U.S. government The Federal Government of the United States of America (U.S. federal government or U.S. government) is the national government of the United States. The U.S. federal government is composed of three distinct branches: legislative, executi ...

to uniquely identify counties, is provided with each entry. FIPS codes are five-digit numbers; for Pennsylvania the codes start with 42 and are completed with the three-digit county code. The FIPS code for each county in the table links to census data for the specific county.

County list

Former counties

The

Province of Pennsylvania The Province of Pennsylvania, also known as the Pennsylvania Colony, was a British North American colony founded by William Penn, who received the land through a grant from Charles II of England in 1681. The name Pennsylvania was derived from ...

's Three Lower Counties had been transferred from New York Colony in 1682. In 1701 these counties became a separate colony called

Delaware Colony The Delaware Colony, officially known as the three Lower Counties on the Delaware, was a semiautonomous region of the proprietary Province of Pennsylvania and a '' de facto'' British colony in North America. Although not royally sanctioned, ...

, although it shared the same colonial governor as Pennsylvania until independence in 1776.

References

{{Pennsylvania

Counties A county () is a geographic region of a country used for administrative or other purposesL. Brookes (ed.) '' Chambers Dictionary''. Edinburgh: Chambers Harrap Publishers Ltd, 2005. in some nations. The term is derived from the Old French denoti ...

FIPS code

County list

Former counties

See also

Further reading

References