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- Environmental Systems Research Institute, Inc. (ESRI)55
- United States Geological Survey45
- Esri17
- National Atlas of the United States and the United States Geological Survey11
- Geographic Data Technology, Inc. (GDT)10
- TomTom North America, Inc.8
- Smithsonian Institution, Global Volcanism Program, National Atlas of the United States, and the United States Geological Survey3
- Tele Atlas North America, Inc.2
- U.S. Department of Commerce, Census Bureau2
- Health Forum, L.L.C.1
- U.S. Department of Commerce, Census Bureau, Esri1