In 2022, there were over half a million Louisiana adults who had been diagnosed with diabetes at some point in their lives, according to data from the Center for Disease Control and Prevention.
On average, 13% of Louisiana adults had a diabetes diagnosis -- higher than the U.S. average at 11.6%. The percentage of adults with diabetes increased with age, reaching 29.2% among those aged 65 years or older, according to the CDC.
People with diabetes are at high risk of heart disease, stroke and other serious complications, the CDC says -- including kidney failure, blindness and lower-limb amputations.
These parishes had the highest percentages of adults with a diabetes diagnosis in 2022, reported in 2025 by County Health Rankings and Roadmaps, in descending order:
East Carroll Parish with 20% of adults with diabetes Madison Parish with 19% of adults with diabetesClaiborne and Tensas parishes with 18% of adults with diabetesBienville, Evangeline, Morehouse and Webster parishes with 16% of adults with diabetes.
These parishes had the lowest percentages of adults with a diabetes diagnosis in 2022, reported in 2025 by County Health Rankings and Roadmaps, in ascending order:
Ascension, Livingston, St. Charles and St. Tammany parishes with 11% of adults with diabetesAcadia, Beauregard, Bossier, Cameron, Jefferson Davis, Lafayette, LaSalle, Terrebonne and Vernon parishes with 12% of adults with diabetes.