Platte Valley Kin Seekers
- Genealogy club united in the interest of the preservation and utilization of family histories. Promotes educational programs, workshops and publications of genealogical and historical value. Includes membership details and an application.
- http://www.megavision.net/pvks/

The Political Graveyard: Platte County, Nebraska
- Database provides brief biographies of politicians who were born, lived or died in the county, a cemetery list, and political history.
- http://politicalgraveyard.com/geo/NE/PL.html

Platte County - NEGenWeb
- Features genealogy lookups, an index to surnames, queries, and links to related resources. Subscribe to an email list or submit family group sheets.
- http://www.rootsweb.com/~neplatte/

Platte County, Nebraska
- Official website provides demographics, information about departments and a calendar of events.
- http://www.plattecounty.net/

Platte County Museum
- Home to historical exhibits of artifacts and buildings from the pioneer period. Includes open hours and photos. Located in Columbus.
- http://www.megavision.net/museum/

Platte County Agricultural Society
- Sponsors thoroughbred horse racing and the county state fair. Lists calendar of events and history.
- http://www.agpark.com/