HP has membership in the following U.S. state and local associations.
| Albuquerque Chamber of Commerce |
| American Legislative Exchange Council (ALEC) |
| AWB |
| Business Council of New York State |
| California Manufacturers & Tech Assoc. |
| California Taxpayers Assoc. |
| Chamber of Commerce, California |
| Chamber of Commerce, Cupertino |
| Chamber of Commerce, Palo Alto |
| Chamber of Commerce, San Diego |
| Chamber of Commerce, San Jose Silicon Valley |
| Civil Justice Assoc. of California |
| Colorado Association of Commerce & Industry (CACI) |
| Council of State Governments/CSG Assoc.Program |
| Council of Western A.G.s (CWAG) |
| Creating Opportunites in New Mexico |
| Dallas Chamber |
| Democratic Attorney Generals Association |
| Democratic Governors Association |
| Democratic Legislative Campaign Committee |
| Florida Chamber |
| Georgia Chamber of Commerce |
| Gongwer News Service (MI & OH sub) |
| Greater Austin Chamber of Commerce |
| ID Association of Commerce & Industry (IACI) |
| Illinois Manf. Assoc. |
| Louisiana Assoc. of Business and Industry |
| Michigan Chamber of Commerce |
| National Conference of State Legislatures (NCSL)
(Gold level foundation member) |
| National Governors' Association (NGA)
Corporate Fellows Program/Summer Sponsorship |
| Nebraska State Chamber |
| New Mexico Economic Development Coalition |
| Plano Chamber of Commerce |
| Quorum Report |
| Republican Legislative Campain Committee |
| Republican Attorney Generals Association |
| Republican Governors Association |
| Senate Presidents Assoc. |
| State Government Affairs Council (SGAC)
(memberships, sponsorship, registrations) |
| State Legislative Leaders Foundation |
| Technology Council of Central PA |
| Texas Association of Manufacturers |
| Texas Conservative Coaliton |
| Western Governors Association (WGA) |
| Wis Manufacturers & Commerce |
| WisPolitics Publishing, Inc. |