This is a listing of Federal Information Processing Standard (FIPS) codes for each of the 67 counties in Pennsylvania.
Information gathered from census data - https://www.census.gov/library/reference/code-lists/ansi.html
For more technical details :

Federal Information Processing Standards Publications (FIPS PUBS) are issued by the National Institute of Standards and Technology (NIST) after approval by the Secretary of Commerce pursuant to Section 111 (d) of the Federal Property and Administrative Services Act of 1949 as amended by the Computer Security Act of 1987, Public Law 100-235.

Federal Information Processing Standard (FIPS) 6-4, Counties and Equivalent Entities of the U.S., Its Possessions, and Associated Areas -- 90 Aug 31 , provides the names and codes that represent the counties and other entities treated as equivalent legal and/or statistical subdivisions of the 50 States, the District of Columbia, and the possessions and freely associated areas of the United States. Counties are considered to be the "first-order subdivisions" of each State and statistically equivalent entity, regardless of their local designations (county, parish, borough, etc.).

This Pennsylvania County map provides links to the Pennsylvania's Department of Labor & Industry's County Profiles. These files are also available at County Profiles.

A generic latitude and longitude for each county. These points are provided so a map layer can be developed using files with aggregated data grouped by county name. Use this generic latitude and longitude georeferenced point file and assign any information to the correct county showing on a boundary map layer. If totals are shown in a file for the Commonwealth of Pennsylvania and the desire is to show the total for the state on a map layer, there is a generic latitude and longitude point given for Pennsylvania that will show in the South East corner of the map visual actually landing in the state of Maryland. This is provided for visualizing and displaying the state information on the map layer along with county information.

This is a connection to the Bucks County GIS public platform for exploring the data of Bucks County and other data that may be important to the residents, business community and visitors of the county.Provided by the Commissioners of Bucks County and the Bucks County Planning Commission.

This is a connection to the York County Spatial GIS Open Data Portal managed by the York County Planning Commission with coordination from York County Departments.

Contact Information:
York County Planning Commission
28 East Market Street, 3rd Floor
York, PA 17401-1580
T: 717.771.9870
F: 717.771.9511
E: InformationSystemschief@ycpc.org

Website: www.ycpc.org includes all the latest news

Visit http://yorkcountypa.maps.arcgis.com/home/index.html to view our interactive web mapping applications.

Disclaimer:
The York County Planning Commission provides this Geographic Information System map and/or data (collectively the "Data") as a public information service. The Data is not a legally recorded plan, survey, official tax map, or engineering schematic and should be used for only general information. Reasonable effort has been made to ensure that the Data is correct; however the Commission does not guarantee its accuracy, completeness, or timeliness. The Commission shall not be liable for any damages that may arise from the use of the Data.

This is a connection to the Allegheny County's Geographic Information Systems Group's Open Data Portal.
They are pleased to share some of our most comprehensive data sets with the public. You can solve important local issues by exploring and downloading relevant open data, analyzing and combining the datasets using maps, and discovering and building apps.

These datasets are available in a number of formats. You can choose to download them, use REST APIs, or view them directly in an interactive web map. API's provide access as REST, HTML, JSON, GeoJSON, etc.

Please contact Allegheny for any questions or suggestions on datasets at GISHelp@AlleghenyCounty.US

This dataset reports the name of the site, street address, city, county, zip code, telephone number, latitude, and longitude of Pennsylvania Single County Authorities (SCAs). SCAs receive state and federal dollars through contracts with the Department of Drug and Alcohol Programs (DDAP) to plan, coordinate, manage, and implement the delivery of drug and alcohol prevention, intervention, and treatment services at the local level.
The Pennsylvania Association of County Drug and Alcohol Administrators (PACDAA) is a professional association that represents the Single County Authorities (SCAs) across the commonwealth who receive state and federal dollars through contracts with the Department of Drug and Alcohol Programs (DDAP), to plan, coordinate, programmatically and fiscally manage and implement the delivery of drug and alcohol prevention, intervention, and treatment services at the local level.

SCAs also receive funding for treatment services from the PA Department of Human Services (DHS), Office of Mental Health and Substance Abuse Services (OMHSAS). These services funded by DHS are primarily targeted to individuals in non-hospital residential care who are eligible for Medical assistance, or to a continuum of treatment services for those individuals no longer eligible as a result of welfare reforms.​

This is a connection to the Crawford County Government public platform for exploring and downloading open data, discovering and building apps, and engaging to solve important local issues. You can analyze and combine Open Datasets using maps, as well as develop new web and mobile applications. Let's make our great community even better, together!

Web/Data Disclaimer:
Click here for Crawford County, PA GIS Web/Data Disclaimer

This is a connection to the Chester County GIS Open Data portal. Chester County incorporates the use of Geographic Information Systems (GIS) in several departments and agencies that use geographic data in their key business functions. Geographic Information Systems integrate spatial data (maps) and tabular data (databases) through computer technology.

Contact Chester County GIS
Phone: 610-344-6096
Email: gis@chesco.org

The GIS Department has now created an Open Data Site for the free distribution of GIS Data. This site allows you to search for layers by key words or by themes.
You can download the data in Excel spreadsheet format, or via ArcGIS Shapefile format. You can also filter the selection prior to downloading the data. Additionally, we have links to our public facing Mapping websites and story boards.