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History and Facts of Pennsylvania Counties

Pennsylvania Counties – In 1664 New York was captured by the English, allowing them to acquire the area that is now Pennsylvania. Then, in 1681, King Charles II granted Pennsylvania to a Quaker named William Penn. The the Pennsylvania Colony, aka Province of Pennsylvania, was founded on March 4, 1681.

From 1776 to 1800, the federal government was based almost entirely out of Pennsylvania. In 1776 the Declaration of Independence was enacted there. Then, in 1787, the U.S. Constitution was drafted there. Pennsylvania is also home to both Gettysburg battlefield and Valley Forge. Philadelphia, Pennsylvania is home to Independence Hall and a glass pavilion across from it, which is where the Liberty Bell is located.

The State of Pennsylvania was created as the 2nd state on December 12, 1787. Pennsylvania has 67 Counties. States bordering Pennsylvania  are New YorkNew JerseyDelawareMarylandOhio and West Virginia.

In 1682 the first Pennsylvania counties were formed. They were  BucksChester and Philadelphia Counties. The last county to be formed was Lackawanna County in 1878.

List of Pennsylvania Counties

Pennsylvania is divided into 67 counties.

List of Old Former / Extinct Pennsylvania Counties

Pennsylvania has counties that no longer are in existence. A lot of these counties were established and disbanded within the 19th century; county borders have modified very little since 1900 in the vast most of states.

The below Pennsylvania counties no longer exist:

?? County, Pennsylvania

Created ? from ?. It was abolished ? and re-established as ? County on ?.


Map of Pennsylvania County Boundary Changes from 1673 to 1878

This Interactive Map of Pennsylvania Counties show the historical boundaries, names, organization, and attachments of every county, extinct county and unsuccessful county proposal from the creation of Pennsylvania from 1673-1878.

Fun Facts about Pennsylvania Counties

County Name Facts

The County names:

  • 0 of them named for Native American words or people,

Counties by Year

In 1843 the first Pennsylvania counties were formed. They were Clackamas CountyMarion CountyWashington County and Yamhill County. The last county to be formed was Deschutes County in 1916.

  • ? County was the first county created on ?.
  •  The last county to be formed was ? County on ?.

Facts for County Size

  • ? County (000 sq mi) is the largest county in Pennsylvania.
  • ? County (000 sq mi) is the smallest county in Pennsylvania.

Facts for County Population (2017 Est.)

  • ? County (000) is the most populated county in Pennsylvania.
  • ? County (000) is the least populated county in Pennsylvania.

Facts for Pennsylvania Counties and Cities

Pennsylvania’s 10 largest cities (2010) are:

  1. Birmingham (000) is in ? County and ? Counties
  2. Philadelphia (1,567,442), Pittsburgh (304,391), Allentown (120,207), Erie (99,475), Reading (87,879), Scranton (77,118), Bethlehem (74,892), Lancaster (59,339), Levittown (52,983), Harrisburg (49,081),