Leukemia - Chronic Lymphocytic - CLL: Statistics

Approved by the Cancer.Net Editorial Board, 01/2021

ON THIS PAGE: You will find information about the number of people who are diagnosed with CLL each year. You will also read general information on surviving the disease. Remember, survival rates depend on several factors. Use the menu to see other pages. 

This year, 21,250 people of all ages (13,040 men and boys and 8,210 women and girls) in the United States will be diagnosed with CLL. While it can occur at any age, CLL is more common in older adults. The average age at diagnosis is around 70. CLL is uncommon in people younger than 40 and is very rare in children. CLL is the most common type of leukemia in adults older than 19, accounting for 38% of all leukemia diagnoses.

It is estimated that 4,320 deaths (2,620 men and 1,700 women) from CLL will occur this year. The number of people who have died from the disease dropped 3% annually between 2008 and 2017. 

The survival rate for people with CLL varies widely according to the stage of the disease (see Stages). The 5-year survival rate tells you what percent of people live at least 5 years after the cancer is found. Percent means how many out of 100. The 5-year survival rate for people age 20 and older with CLL is 86%.  

It is important to remember that statistics on the survival rates for people with CLL are an estimate. The estimate comes from annual data based on the number of people with this cancer in the United States. Also, experts measure the survival statistics every 5 years. So the estimate may not show the results of better diagnosis or treatment available for less than 5 years. Talk with your doctor if you have any questions about this information. Learn more about understanding statistics

Statistics adapted from the American Cancer Society's (ACS) publications, Cancer Facts & Figures 2021 and Cancer Facts & Figures 2020, and the ACS website (sources accessed January 2021).   

The next section in this guide is Medical Illustrations. It offers drawings of body parts often affected by CLL. Use the menu to choose a different section to read in this guide.