Researchers can access and analyze high-quality population-based cancer incidence data on the entire United States population. De-identified cancer incidence data reported to CDC’s National Program for Cancer Registries (NPCR) and the National Cancer Institute’s (NCI’s) Surveillance, Epidemiology, and End Results (SEER) Program are available to researchers for free in public use databases that can be accessed using software developed by NCI’s SEER Program.