Medicare in Oklahoma by county

Most people with Medicare

Across Oklahoma, 830,945 people had Medicare in July 2026, 42% of them in Medicare Advantage or another Medicare health plan. The counties with the most:

1. Oklahoma County 147,480 with Medicare · 45% in Medicare Advantage · 27 Advantage plans with drug coverage
2. Tulsa County 129,024 with Medicare · 52% in Medicare Advantage · 23 Advantage plans with drug coverage
3. Cleveland County 53,886 with Medicare · 41% in Medicare Advantage · 25 Advantage plans with drug coverage
4. Canadian County 29,191 with Medicare · 42% in Medicare Advantage · 26 Advantage plans with drug coverage
5. Comanche County 21,961 with Medicare · 35% in Medicare Advantage · 14 Advantage plans with drug coverage
6. Rogers County 20,929 with Medicare · 49% in Medicare Advantage · 17 Advantage plans with drug coverage
7. Wagoner County 18,150 with Medicare · 51% in Medicare Advantage · 20 Advantage plans with drug coverage
8. Creek County 17,341 with Medicare · 57% in Medicare Advantage · 20 Advantage plans with drug coverage
9. Pottawatomie County 16,882 with Medicare · 45% in Medicare Advantage · 22 Advantage plans with drug coverage
10. Muskogee County 16,337 with Medicare · 41% in Medicare Advantage · 16 Advantage plans with drug coverage

All 77 counties, A to Z

• Adair County4,622 with Medicare · 46% in Medicare Advantage · 16 Advantage plans with drug coverage
• Alfalfa County1,175 with Medicare · 21% in Medicare Advantage · 5 Advantage plans with drug coverage
• Atoka County3,102 with Medicare · 33% in Medicare Advantage · 5 Advantage plans with drug coverage
• Beaver County1,037 with Medicare · 15% in Medicare Advantage · 0 Advantage plans with drug coverage
• Beckham County4,298 with Medicare · 23% in Medicare Advantage · 5 Advantage plans with drug coverage
• Blaine County2,137 with Medicare · 29% in Medicare Advantage · 10 Advantage plans with drug coverage
• Bryan County10,545 with Medicare · 36% in Medicare Advantage · 6 Advantage plans with drug coverage
• Caddo County6,470 with Medicare · 35% in Medicare Advantage · 8 Advantage plans with drug coverage
• Canadian County29,191 with Medicare · 42% in Medicare Advantage · 26 Advantage plans with drug coverage
• Carter County11,927 with Medicare · 36% in Medicare Advantage · 9 Advantage plans with drug coverage
• Cherokee County10,327 with Medicare · 39% in Medicare Advantage · 13 Advantage plans with drug coverage
• Choctaw County3,890 with Medicare · 37% in Medicare Advantage · 6 Advantage plans with drug coverage
• Cimarron County529 with Medicare · 20% in Medicare Advantage · 0 Advantage plans with drug coverage
• Cleveland County53,886 with Medicare · 41% in Medicare Advantage · 25 Advantage plans with drug coverage
• Coal County1,259 with Medicare · 36% in Medicare Advantage · 8 Advantage plans with drug coverage
• Comanche County21,961 with Medicare · 35% in Medicare Advantage · 14 Advantage plans with drug coverage
• Cotton County1,347 with Medicare · 28% in Medicare Advantage · 8 Advantage plans with drug coverage
• Craig County3,924 with Medicare · 42% in Medicare Advantage · 16 Advantage plans with drug coverage
• Creek County17,341 with Medicare · 57% in Medicare Advantage · 20 Advantage plans with drug coverage
• Custer County5,161 with Medicare · 27% in Medicare Advantage · 6 Advantage plans with drug coverage
• Delaware County11,747 with Medicare · 46% in Medicare Advantage · 12 Advantage plans with drug coverage
• Dewey County1,176 with Medicare · 18% in Medicare Advantage · 5 Advantage plans with drug coverage
• Ellis County953 with Medicare · 15% in Medicare Advantage · 0 Advantage plans with drug coverage
• Garfield County12,920 with Medicare · 29% in Medicare Advantage · 10 Advantage plans with drug coverage
• Garvin County6,599 with Medicare · 41% in Medicare Advantage · 20 Advantage plans with drug coverage
• Grady County11,716 with Medicare · 38% in Medicare Advantage · 17 Advantage plans with drug coverage
• Grant County1,041 with Medicare · 23% in Medicare Advantage · 6 Advantage plans with drug coverage
• Greer County1,333 with Medicare · 27% in Medicare Advantage · 7 Advantage plans with drug coverage
• Harmon County595 with Medicare · 28% in Medicare Advantage · 0 Advantage plans with drug coverage
• Harper County860 with Medicare · 11% in Medicare Advantage · 0 Advantage plans with drug coverage
• Haskell County3,103 with Medicare · 38% in Medicare Advantage · 12 Advantage plans with drug coverage
• Hughes County3,073 with Medicare · 40% in Medicare Advantage · 15 Advantage plans with drug coverage
• Jackson County4,734 with Medicare · 26% in Medicare Advantage · 3 Advantage plans with drug coverage
• Jefferson County1,498 with Medicare · 28% in Medicare Advantage · 9 Advantage plans with drug coverage
• Johnston County2,566 with Medicare · 38% in Medicare Advantage · 7 Advantage plans with drug coverage
• Kay County10,725 with Medicare · 36% in Medicare Advantage · 8 Advantage plans with drug coverage
• Kingfisher County3,307 with Medicare · 29% in Medicare Advantage · 20 Advantage plans with drug coverage
• Kiowa County2,288 with Medicare · 34% in Medicare Advantage · 10 Advantage plans with drug coverage
• Latimer County2,586 with Medicare · 36% in Medicare Advantage · 9 Advantage plans with drug coverage
• Le Flore County11,912 with Medicare · 43% in Medicare Advantage · 14 Advantage plans with drug coverage
• Lincoln County8,218 with Medicare · 45% in Medicare Advantage · 22 Advantage plans with drug coverage
• Logan County10,166 with Medicare · 42% in Medicare Advantage · 26 Advantage plans with drug coverage
• Love County2,328 with Medicare · 35% in Medicare Advantage · 3 Advantage plans with drug coverage
• Major County1,748 with Medicare · 18% in Medicare Advantage · 6 Advantage plans with drug coverage
• Marshall County4,351 with Medicare · 38% in Medicare Advantage · 3 Advantage plans with drug coverage
• Mayes County9,997 with Medicare · 48% in Medicare Advantage · 18 Advantage plans with drug coverage
• McClain County10,363 with Medicare · 39% in Medicare Advantage · 25 Advantage plans with drug coverage
• McCurtain County7,424 with Medicare · 30% in Medicare Advantage · 4 Advantage plans with drug coverage
• McIntosh County5,951 with Medicare · 44% in Medicare Advantage · 19 Advantage plans with drug coverage
• Murray County3,398 with Medicare · 26% in Medicare Advantage · 12 Advantage plans with drug coverage
• Muskogee County16,337 with Medicare · 41% in Medicare Advantage · 16 Advantage plans with drug coverage
• Noble County2,681 with Medicare · 24% in Medicare Advantage · 6 Advantage plans with drug coverage
• Nowata County2,475 with Medicare · 43% in Medicare Advantage · 12 Advantage plans with drug coverage
• Okfuskee County2,706 with Medicare · 45% in Medicare Advantage · 18 Advantage plans with drug coverage
• Oklahoma County147,480 with Medicare · 45% in Medicare Advantage · 27 Advantage plans with drug coverage
• Okmulgee County9,339 with Medicare · 51% in Medicare Advantage · 23 Advantage plans with drug coverage
• Osage County9,843 with Medicare · 48% in Medicare Advantage · 17 Advantage plans with drug coverage
• Ottawa County8,146 with Medicare · 48% in Medicare Advantage · 16 Advantage plans with drug coverage
• Pawnee County3,972 with Medicare · 44% in Medicare Advantage · 16 Advantage plans with drug coverage
• Payne County13,998 with Medicare · 21% in Medicare Advantage · 9 Advantage plans with drug coverage
• Pittsburg County10,720 with Medicare · 37% in Medicare Advantage · 14 Advantage plans with drug coverage
• Pontotoc County8,517 with Medicare · 32% in Medicare Advantage · 9 Advantage plans with drug coverage
• Pottawatomie County16,882 with Medicare · 45% in Medicare Advantage · 22 Advantage plans with drug coverage
• Pushmataha County3,088 with Medicare · 37% in Medicare Advantage · 12 Advantage plans with drug coverage
• Roger Mills County831 with Medicare · 17% in Medicare Advantage · 0 Advantage plans with drug coverage
• Rogers County20,929 with Medicare · 49% in Medicare Advantage · 17 Advantage plans with drug coverage
• Seminole County5,552 with Medicare · 48% in Medicare Advantage · 23 Advantage plans with drug coverage
• Sequoyah County10,613 with Medicare · 46% in Medicare Advantage · 14 Advantage plans with drug coverage
• Stephens County11,302 with Medicare · 27% in Medicare Advantage · 14 Advantage plans with drug coverage
• Texas County2,747 with Medicare · 19% in Medicare Advantage · 0 Advantage plans with drug coverage
• Tillman County1,646 with Medicare · 37% in Medicare Advantage · 7 Advantage plans with drug coverage
• Tulsa County129,024 with Medicare · 52% in Medicare Advantage · 23 Advantage plans with drug coverage
• Wagoner County18,150 with Medicare · 51% in Medicare Advantage · 20 Advantage plans with drug coverage
• Washington County12,895 with Medicare · 39% in Medicare Advantage · 10 Advantage plans with drug coverage
• Washita County2,540 with Medicare · 27% in Medicare Advantage · 5 Advantage plans with drug coverage
• Woods County1,785 with Medicare · 18% in Medicare Advantage · 2 Advantage plans with drug coverage
• Woodward County3,942 with Medicare · 22% in Medicare Advantage · 2 Advantage plans with drug coverage

Sources: CMS Medicare Monthly Enrollment, July 2026, and the CMS 2027 plan landscape. Medicare Advantage here includes other Medicare health plans, such as cost plans and PACE. Before you meet any agent, check their Oklahoma license.

Keep reading

• How to find a good Medicare agent near youWhere to look for a local Medicare agent, how to narrow the list to one or two, and the five-minute checks to do before you share anything.
• Medicare Open Enrollment checklist: what to check before December 7A step-by-step checklist for the October 15 to December 7, 2026 Open Enrollment Period: what to read in your plan's letter, what's changing for 2027, what you can switch, and what happens if you do nothing.
• Moving to another state with Medicare: what changes and what to doOriginal Medicare moves with you; most Medicare Advantage and drug plans don't. What happens to each kind of coverage when you move, your window to switch, and why your agent must be licensed in your new state.