Elected official and staffer data, delivered directly to your systems
Keep records accurate and up to date across platforms with flexible delivery options that help your teams confidently take action with the most reliable information.
Strengthen Your Public Affairs Strategy
Integrate proprietary, human-captured and verified contact data directly into your systems to keep elected official records accurate and up to date. Avoid data gaps caused by changes in elected officials across all levels of government, and reduce manual upkeep with flexible, scalable delivery options like customized data files tailored to your needs.
Increase Your Stakeholder Influence
Go beyond titles—connect directly with the staffers who influence your issues. Staff-level assignments, committee roles, and district data help ensure your outreach is both accurate, targeted, and effective.
Build a Unified, Data-Driven Strategy
Tie every member, stakeholder, or campaign action back to the right legislator using ZIP-to-District data and geographic identifiers. With accurate data fueling your efforts, you can plan, execute, and report across teams and regions.
KNOWWHO DATA SERVICES FEATURES
The industry’s most trusted source for public official data
Daily Data Updates
Receive regularly refreshed files with up-to-date mailing addresses, phone numbers, emails, and social media profiles for officials and staff at every level of government.
Staff Directories
Access detailed information on staffers — including roles, emails, phone numbers, and areas of responsibility — to connect with the right people beyond the lawmakers themselves.
Seamless Delivery
Access data through reliable delivery methods and flexible formatting options tailored to your needs, including CSV files, database exports, and scheduled SFTP drops.
ZIP Code Matching
Match stakeholders to the right districts using precise 9-digit ZIP code data for accurate, district-level targeting.
Custom Segmentation Option
Organize legislators, staff, and contacts with data that enables segmentation by party, chamber, committee, or any other criteria for tailored outreach.
High Quality Photographs
Personalize communications with high-resolution, color photographs of elected officials.
Congress
Access verified contact information for all 541 members of Congress, their committees and subcommittees, plus over 13,000 congressional staffers.
Federal Executive
Engage with over 37,000 top-level officials across the White House, federal departments, and independent agencies.
State Legislative
Find accurate contact data for more than 19,000 elected officials and staff in state upper and lower chambers.
State Executive
Connect with 21,000 executive leaders from state-level agencies, departments, and offices nationwide.
Local - County
Reach over 25,000 elected county officials, covering every U.S. county.
Local - Municipal
Target more than 36,000 elected officials across 4,500 municipalities with populations over 5,000.
