The Pennsylvania Neighborhood Explorer helps you to research any Pennsylvania neighborhood (census block group) and get home values, average household income, owner/renter/ occupancy rates, projected growth rates, boundary maps, comparisons to other communities, and much more.
Pennsylvania State Flower - Mountain Laurel
The area of Pennsylvania was part of the original territory of the United States. It was chartered in 1681, although New York did not relinquish its claim to the area until the following year. The southern boundary was resolved with the survey of the Mason and Dixon Line in the 1760s. Connecticut had claims to Pennsylvania territory resolved by award of the Continental Congress in 1782. Pennsylvania ratified the U.S. Constitution on December 12, 1787; it was the second of the original 13 states to join the Union. Pennsylvania assumed generally the same boundary as the present state with the acquisition of the Erie Triangle from New York in 1792. Pennsylvania is one of four states that are legally described as a commonwealth.
Census data for Pennsylvania are available beginning with the 1790 census. Any population that was enumerated in the Erie Triangle was included in Pennsylvania, although this area was not legally part of the state until 1792.
See: Geographic Terms & Concepts
Interactive Map of Pennsylvania Counties | Static Overview Map of Pennsylvania Counties
There are 67 counties in Pennsylvania. Philadelphia County and Philadelphia city are governmentally consolidated and function as a municipal government. All other counties are each governed by a board of county commissioners.
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Adams County
Allegheny County
Armstrong County
Beaver County
Bedford County
Berks County
Blair County
Bradford County
Bucks County
Butler County
Cambria County
Cameron County
Carbon County
Centre County
Chester County
Clarion County
Clearfield County
Clinton County
Columbia County
Crawford County
Cumberland County
Dauphin County
Delaware County
Elk County
Erie County
Fayette County
Forest County
Franklin County
Fulton County
Greene County
Huntingdon County
Indiana County
Jefferson County
Juniata County
Lackawanna County
Lancaster County
Lawrence County
Lebanon County
Lehigh County
Luzerne County
Lycoming County
McKean County
Mercer County
Mifflin County
Monroe County
Montgomery County
Montour County
Northampton County
Northumberland County
Perry County
Philadelphia County
Pike County
Potter County
Schuylkill County
Snyder County
Somerset County
Sullivan County
Susquehanna County
Tioga County
Union County
Venango County
Warren County
Washington County
Wayne County
Westmoreland County
Wyoming County
York County
Pennsylvania has 2,575 county subdivisions known as minor civil divisions (MCDs). There are 1,546 townships with active functioning governments and 1 township, Cold Spring township in Lebanon County, which is an inactive entity. Each township is governed by an elected board of commissioners or a board of supervisors. The 1,015 incorporated places are independent of MCDs and serve as 1,027 county subdivisions. In addition, there is one undefined MCD that consists entirely of water area.
Pennsylvania State Bird - Ruffed Grouse
Pennsylvania has 1,764 places; 1,015 incorporated places and 749 census designated places (CDPs). The incorporated places consist of 954 boroughs, 57 cities, 3 municipalities, and 1 town. MCD and place governments have the same power and functions in Pennsylvania. Incorporated places in Pennsylvania are independent of county subdivisions.
Alphabetical List of Cities, Towns, CDPs and Other Populated Places A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q, R | S | T | U, V | W, X, Y, Z
Pennsylvania Civil Features : Political Subdivisions, Native Areas, Land Grants, etc. - sorted by Census Class Codes .
There are 16 Metropolitan and 20 Micropolitan Statistical Areas in Pennsylvania. PA Metopolitan & Micropolitan Areas
There are 1,798 ZIP Code tabulation areas (ZCTAs) in Pennsylvania. View Pennsylvania ZIP Codes and ZIP Code Maps .
Pennsylvania has 501 unified school districts. View Pennsylvania Public and Private Schools .
Pennsylvania has 18 congressional districts. An interactive map shows the contact information for each Representative as well as the boundaries for each Pennsylvania district. View Map of Pennsylvania Congressional Districts .
There are 50 state senate districts and 203 state house districts in Pennsylvania.
