California Cancer Registry
The California Cancer Registry (CCR) is the statewide system that keeps track of cancer cases in California. The CCR collects information on every cancer diagnosed in the state, except for two common types of skin cancer (basal cell and squamous cell) and a non‑invasive form of cervical cancer.
California began requiring cancer reporting in 1985 under sections 103875 and 103885 of the California Health and Safety Code. The statewide system became fully active in 1988.
Today, the CCR is known as one of the top cancer registries in the world. Because California has a large and diverse population, CCR data helps researchers understand how cancer affects different communities.
The CCR plays an important role in cancer research and supports many studies that help improve public health in California.