Cancer Prevalence Statistics

Prevalence is defined as the number or percent of people alive on a certain date in a population who previously had a diagnosis of the disease. It includes new (incidence) and pre-existing cases and is a function of both past incidence and survival. Information on prevalence can be used for health planning, resource allocation, and as an estimate of cancer survivorship. Overview of Cancer Prevalence contains a description of the methodology and the types of prevalence statistics.


The SEER Cancer Statistics Review, 1975-2017 includes tables and figures showing Complete and Limited Duration Cancer Prevalence Estimates (PDF) which include US cancer prevalence estimated from SEER data. Prevalence estimates are presented by cancer site, race, sex, and years since diagnosis.

Interactive Tools for Accessing Precalculated Prevalence Statistics

SEER*Explorer is an interactive website that provides easy access to a wide range of SEER cancer statistics. It provides detailed statistics for a cancer site by sex, race, calendar year, age, and for a selected number of cancer sites, by stage and histology.

Cancer Query Systems: Cancer Prevalence Database is a Web-based program that allows you to select statistics by defining a variety of parameters.

The Cancer Prevalence & Cost of Care Projections website provides projections of cancer prevalence and costs of cancer care through the year 2020.

Last Updated: 15 Apr, 2020