Congress KnowWho: Comprehensive Congressional Directory & Staff Contacts

You have political contact information needs, and we have the best directory and data solutions. With KnowWho it's right the first time, every time. KnowWho is an online directory publisher based in the Washington, DC metropolitan area who provides powerful advocacy and government affairs solutions covering federal, state and local elected officials and their staffs. Founded in 1999 to provide affordable, effective and scalable solutions to fit our customer’s needs and budget, our data is used by small shops looking for efficiencies to some of the largest names in business who need reliable and up-to-date information to power their advocacy and government relations programs.