Out of the 10 most populous counties in Pennsylvania, 8 of them are located in the southeastern portion of the state. In fact, 4 out of the 5 most populous counties in Pennsylvania are either located in the Philadelphia or Pittsburgh Metropolitan Statistical Areas. While the state’s capital city (Harrisburg) is located in Dauphin County, the largest city (Philadelphia) is located in Philadelphia County.

How Many Counties in Pennsylvania

The Commonwealth of Pennsylvania (situated in the Mid-Atlantic, Northeastern, and Appalachian regions of the US) has 67 counties. Check this Pennsylvania County Map which provides the location of all counties on the Pennsylvania Map.

Counties of Pennsylvania

• Adams County Map
• Allegheny County Map
• Armstrong County Map
• Beaver County Map
• Bedford County Map
• Berks County Map
• Blair County Map
• Bradford County Map
• Bucks County Map
• Butler County Map
• Cambria County Map
• Cameron County Map
• Carbon County Map
• Centre County Map
• Chester County Map
• Clarion County Map
• Clearfield County Map
• Clinton County Map
• Columbia County Map
• Crawford County Map
• Cumberland County Map
• Dauphin County Map
• Delaware County Map
• Elk County Map
• Erie County Map
• Fayette County Map
• Forest County Map
• Franklin County Map
• Fulton County Map
• Greene County Map
• Huntingdon County Map
• Indiana County Map
• Jefferson County Map
• Juniata County Map
• Lackawanna County Map
• Lancaster County Map
• Lawrence County Map
• Lebanon County Map
• Lehigh County Map
• Luzerne County Map
• Lycoming County Map
• McKean County Map
• Mercer County Map
• Mifflin County Map
• Monroe County Map
• Montgomery County Map
• Montour County Map
• Northampton County Map
• Northumberland County Map
• Perry County Map
• Philadelphia County Map
• Pike County Map
• Potter County Map
• Schuylkill County Map
• Snyder County Map
• Somerset County Map
• Sullivan County Map
• Susquehanna County Map
• Tioga County Map
• Union County Map
• Venango County Map
• Warren County Map
• Washington County Map
• Wayne County Map
• Westmoreland County Map
• Wyoming County Map
• York County Map

What are the 5 Biggest Counties in Pennsylvania by Size?

The biggest counties in Pennsylvania are Lycoming County, Bradford County, Clearfield County, Tioga County, and Centre County. 

What are the 5 Biggest Counties in Pennsylvania by Population?

In terms of population (2018), the biggest counties in Pennsylvania are Philadelphia County, Allegheny County, Montgomery County, Bucks County, and Delaware County. 

Which is the Smallest County in Pennsylvania?

The smallest county in Pennsylvania (in terms of population) is Cameron County. Montour County is the smallest county in terms of size. 

What are the Oldest and Newest Counties in Pennsylvania?

Bucks County, Chester County, and Philadelphia County are the oldest counties in Pennsylvania, created in1682. Lackawanna County is the newest county, created in 1878. 

Which are the Richest and Poorest Counties in Pennsylvania?

• Chester County is the richest county in Pennsylvania. Its median household income is US$100,214. 
• Forest County is the poorest county in Pennsylvania (in terms of median household income). Its median annual household income is $39,717.

What are the top 5 Best Counties to Live in Pennsylvania?

Montgomery County, Chester County, Allegheny County, Delaware County, and Centre County are the best counties to live in Pennsylvania.