York County Culture & Heritage Museums
- Operates the Museum of York County, Historic Brattonsville, McCelvey Center, Historical Center of York County and the future Museum of Life and the Environment. Includes events, county history, and membership options.
- http://www.chmuseums.org/

Humane Society of York County
- A non-profit organization dedicated to the humane treatment of animals. Information on upcoming events, volunteer opportunities, pictures of pets in need of homes, and news.
- http://www.petfinder.com/shelters/SC76.html

York County Republican Party
- Find out about membership, events, and candidates.
- http://www.yorkcountygop.com/

York County Democratic Party
- Provides news, tools and candidate information, as well as a list of Democrats in office and party officials.
- http://www.yorkdems.com/

The Political Graveyard: York County, S.C.
- Political information and data on York County, SC.
- http://www.politicalgraveyard.com/geo/SC/YO.html

York County Community Foundation
- Activities include building a general endowment, helping non-profit establish charitable giving programs; includes mission statement and contact information.
- http://www.fftc.org/affiliates/community/sc/york/

Crime Stoppers of York County
- All volunteer organization offering information on initiatives, crime statistics, and volunteer opportunities.
- http://www.yorkcrimestoppers.com/

Boys and Girls Clubs of York County
- Learn about events, activities, employment, and volunteer opportunities.
- http://www.bgcyc.org/

York County Red Cross
- Provide medical and disaster relief services; find out about programs, events, fundraising, and youth volunteer programs.
- http://www.yorkcountyredcross.org/

US Census Bureau: York County
- Includes a map, information on population, demographics and business patterns.
- http://quickfacts.census.gov/qfd/states/45/45091.html

K4YTZ - York County Amateur Radio Society
- Club home page and information.
- http://www.ycars.org/