2,800,000
Total Medicare beneficiaries
63%
On Medicare Advantage
37%
On Original Medicare
$202.90
Standard Part B premium (2026)
Medicare Enrollment by County in Ohio
The 15 most-populous counties by Medicare beneficiaries. Click any column heading to sort. Medicare Advantage percentage is the share of each county’s beneficiaries enrolled in an MA or other health plan.
| Cuyahoga County | 284,079 | 62.8% |
| Franklin County | 211,054 | 61.9% |
| Hamilton County | 166,474 | 61.9% |
| Summit County | 127,392 | 68.1% |
| Montgomery County | 121,847 | 65.2% |
| Stark County | 97,161 | 71.9% |
| Lucas County | 95,080 | 61.9% |
| Lorain County | 77,792 | 60.4% |
| Butler County | 76,815 | 59.9% |
| Mahoning County | 62,505 | 68.0% |
| Lake County | 61,490 | 58.1% |
| Trumbull County | 55,167 | 65.1% |
| Clermont County | 48,736 | 62.4% |
| Warren County | 47,315 | 57.1% |
| Medina County | 44,610 | 59.4% |
Key Findings: Medicare in Ohio
- 1Ohio has about 2.8 million Medicare beneficiaries across the state.
- 263% of Ohio beneficiaries are on Medicare Advantage — well above the national average of about 54%, and the highest Medicare Advantage penetration among the states HealthPlan Connect serves.
- 3MA enrollment is high even in the lowest large county: Warren County sits at 57.1%, while Stark County tops the state at 71.9%.
- 4Cuyahoga County (Cleveland) leads the state with about 284,000 Medicare beneficiaries, followed by Franklin County (Columbus) at about 211,000.
- 5Dual-eligible shares cluster around 10–12% in Ohio’s largest counties, from 12.0% in Stark and Lucas down to 5.8% in Medina.
How Ohio Compares to National Averages
Medicare Advantage penetration
Ohio is at 63%, 9 points above the national average of about 54%.
Plans available
Nationally, the average beneficiary can choose from about 32 Medicare Advantage prescription-drug plans for 2026. The exact number available depends on your county.
Medicare Supplement (Medigap)
Nationally, about 41.9% of Original Medicare beneficiaries carry a Medigap policy (AHIP, 2023). State-by-state Medigap rates are not published in an open dataset, so this figure is national. In Ohio, 37% of beneficiaries are in Original Medicare and therefore eligible to buy Medigap.
Find the Best Medicare Plan in Your Ohio County
The right plan depends on where you live. Get a free, personalized review of the Medicare options available in your Ohio county from a licensed advisor.
Get My Free Medicare ReviewMethodology & Sources
Enrollment and county data: Centers for Medicare & Medicaid Services, Medicare Monthly Enrollment, 2024 (data.cms.gov). Figures are 2024 annual counts. Medicare Advantage percentage = (beneficiaries in Medicare Advantage & Other Health Plans ÷ total beneficiaries) × 100. The county table shows the 15 most-populous counties of 88 total.
Part B premium: CMS, 2026 Medicare Parts A & B Premiums and Deductibles. The standard premium is set federally and is the same in every state; higher-income beneficiaries pay an income-related adjustment (IRMAA).
Plan counts and Medigap: KFF, Medicare Advantage 2026 Spotlight (CMS Landscape files); AHIP, The State of Medicare Supplement Coverage, 2023. These are reported as national figures only.
Limitations: Medicare Supplement (Medigap) enrollment and per-county plan counts are not available in an open dataset at the state or county level, so they are not shown per county. Percentages are rounded. Last updated 2026-06-11.
This page is for educational purposes. HealthPlan Connect is not affiliated with or endorsed by CMS or any government agency. Contact a licensed advisor for current plan options in your area.