Kentucky has the highest cancer rate in the United States, with 519 new cases per 100,000 people each year. That figure, based on National Cancer Institute data from 2018 to 2022, puts Kentucky well ahead of every other state. It also leads the nation in cancer deaths, at 181.6 per 100,000.
But “most cancer” can mean two different things: the highest rate or the highest raw number of cases. By sheer volume, California expects roughly 200,000 new cancer diagnoses in 2025, more than any other state. That’s a function of population, not risk. To understand where cancer hits hardest relative to the number of people living there, you need to look at rates, and that’s where the picture gets interesting.
States With the Highest Cancer Rates
The National Cancer Institute tracks age-adjusted incidence rates, which account for differences in how old each state’s population is. (A state with more elderly residents would naturally have more cancer cases, so adjusting for age makes comparisons fair.) Using data from 2018 to 2022, the five states with the highest rates of new cancer diagnoses are:
- Kentucky: 519.0 per 100,000
- Iowa: 498.8 per 100,000
- West Virginia: 498.1 per 100,000
- Louisiana: 489.2 per 100,000
- Minnesota: 486.8 per 100,000
Kentucky’s rate is roughly 7% higher than the national average. The gap between Kentucky and the second-ranked state, Iowa, is about 20 cases per 100,000, which is a meaningful difference across a population of millions.
States With the Most Cancer Deaths
Getting diagnosed with cancer and dying from it are different measures, and the rankings shift when you look at mortality. Based on 2023 CDC data, the five states with the highest age-adjusted cancer death rates are:
- Kentucky: 181.6 per 100,000
- West Virginia: 172.9 per 100,000
- Mississippi: 172.4 per 100,000
- Oklahoma: 168.3 per 100,000
- Arkansas: 166.6 per 100,000
Notice that Iowa and Minnesota, which rank high for new diagnoses, drop off the mortality list entirely. Mississippi, Oklahoma, and Arkansas climb on. This pattern points to differences in the types of cancer being diagnosed, how early they’re caught, and what kind of treatment people can access. A state can have a high diagnosis rate but lower death rate if cancers are detected at earlier, more treatable stages.
States With the Most Total Cases
If you’re looking at raw numbers rather than rates, population size dominates. The American Cancer Society projects the following new cancer cases for 2025:
- California: 199,970
- Florida: 171,960
- Texas: 150,870
- New York: 123,430
- Pennsylvania: 90,240
These are simply the most populated states in the country. California’s projected 200,000 cases don’t mean Californians face higher cancer risk. In fact, none of these states appear in the top five for incidence rates. Florida’s large number is also partly explained by its older-than-average population, since cancer risk rises sharply with age.
Why Kentucky and Appalachian States Lead
The states clustered at the top of both incidence and mortality rankings share several overlapping risk factors. Kentucky has historically had one of the highest adult smoking rates in the country, and smoking is linked to at least 15 types of cancer, not just lung cancer. West Virginia and Kentucky both sit in the heart of Appalachia, a region with higher rates of tobacco use, obesity, and exposure to occupational carcinogens from industries like coal mining.
Obesity alone plays a measurable role. Excess body weight is an established cause of 13 different cancers, and the proportion of cancer cases attributable to weight varies significantly by state. According to the American Cancer Society, the share ranges from 5.9% in Hawaii to 8.3% in Washington, D.C., with states in the South and Midwest generally carrying the heaviest burden. Among women, the effect is roughly twice as large as among men.
Louisiana’s position in the top five is driven partly by high rates of lung, colorectal, and liver cancers, which track closely with smoking, obesity, and alcohol use. The state also has significant industrial corridors along the Mississippi River that have raised longstanding concerns about environmental exposure.
The Role of Rural Geography
Many of the states with the worst cancer outcomes are also heavily rural. That matters for two connected reasons: people in rural areas are less likely to get screened, and once diagnosed, they often face longer travel times to reach oncologists or specialized treatment centers.
Research published in Frontiers in Public Health found that colorectal cancer survival is consistently lower in rural areas compared to urban ones. Over the past two decades, five-year survival improved by 2.9 to 4.3 percentage points in urban areas but only 0.6 to 1.5 percentage points in rural ones. Total mortality from colorectal cancer runs about 3.5 percentage points higher in rural communities. In rural settings, cancer-specific death rates overtake survival rates by the fifth year after diagnosis, compared to the sixth year in urban areas.
Screening rates reflect this gap. Mammography rates in high-mortality states like Kentucky (71.0%), West Virginia (70.5%), and Oklahoma (68.8%) all fall below the rates seen in northeastern states like Connecticut (80.7%), Rhode Island (80.7%), and Massachusetts (78.6%). Lower screening means cancers are found later, when they’re harder to treat.
Why Some Surprising States Rank High
Minnesota and Iowa appearing in the top five for cancer incidence catches many people off guard. These are states known for relatively healthy lifestyles and strong healthcare systems. Part of the explanation is that higher screening rates actually increase incidence numbers. When more people get screened, more cancers get detected, including early-stage cancers that might go undiagnosed elsewhere. Minnesota’s mammography rate is 75.8% and Iowa’s is 73.7%, both above the national average of 72.2%.
Certain cancer types also skew these numbers. Utah, for example, has relatively low overall cancer rates but leads the nation in melanoma, with 42.7 cases per 100,000. The state’s high elevation, abundant outdoor recreation, and predominantly fair-skinned population all contribute. Similarly, states in the upper Midwest have elevated rates of certain cancers linked to factors like radon exposure, which is common in that region’s geology.
The key distinction is between being diagnosed with cancer and dying from it. States where high incidence is driven by thorough screening tend to catch cancers earlier and have better survival outcomes. States where high incidence is driven by preventable risk factors like smoking and obesity tend to also have high mortality, which is exactly the pattern seen in Kentucky, West Virginia, and Mississippi.