Leukemia - Chronic Lymphocytic - CLL: Statistics

Approved by the Cancer.Net Editorial Board, 01/2020

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. 

CLL is the most common type of leukemia in adults older than 19, accounting for 37% of cases. This year, an estimated 21,040 people of all ages (12,930 men and 8,110 women) in the United States will be diagnosed with CLL.  

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.  

It is estimated that 4,060 deaths (2,330 men and 1,730 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 85%.  

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) publication,Cancer Facts & Figures 2020 (January 2020), and the ACS website (January 2020).  

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.