A tray containing cancer cells sits on an optical microscope in the Nanomedicine Lab at UCL's School of Pharmacy in London. REUTERS/Suzanne Plunkett Cancer is the second leading cause of death in the US, accounting for one in four deaths in Americans, according to the Centers for Disease Control and Prevention.

Over the last few decades, cancer death rates have been falling, with the exception of a few key types of cancer: liver, pancreatic, and endometrial cancer.

To get a better look at the incidence of cancer and cancer death rates across the US, the CDC mapped out the data on a state-by-state level. Here's what they found.