Medicare in Hamilton County
Noblesville is the county seat of Hamilton County, and the county also includes Carmel, Fishers and Westfield. According to the U.S. Census Bureau, 2023 population estimates, about 53,693 people in Hamilton County are age 65 or older, so Medicare decisions touch a large share of local households.
The Indiana Department of Health hospital directory lists facilities in Hamilton County including Riverview Health in Noblesville, Ascension St. Vincent Carmel, Ascension St. Vincent Fishers and Ascension St. Vincent Heart Center in Carmel. Which of these your plan includes depends on the plan you choose.
Medicare Advantage and Part D plan availability and provider networks are set county by county, so we start with your ZIP code and your doctors and check what you can actually enroll in. We are based in Tysons, Virginia, and help Hamilton County residents by phone or video call.
The numbers behind Medicare in Hamilton County
| Hamilton County | Indiana | |
|---|---|---|
| Residents age 65 and older | 53,693 | 1,179,148 statewide |
| Share of residents age 65+ | 14.4% | 17.2% statewide |
| People with Medicare | 65,237 | 1,432,708 statewide |
| Enrolled in Medicare Advantage | 27,866 | 731,624 statewide |
| Medicare Advantage share | 42.7% | 51.1% statewide |
Sources: Census Bureau 2023 estimates and CMS Medicare Advantage penetration, September 2026.
Hamilton County ranks 4th of 92 Indiana counties by number of residents age 65 and older, with about 53,693 people in that age group, or 14.4% of residents (statewide: 17.2%). About 21,328 more people are 60 to 64 and are heading toward Medicare; our turning 65 guide explains their first steps. By age, the 65-and-older group splits 60% ages 65 to 74, 30% ages 75 to 84 and 10% age 85 and up (Census 2023). CMS data show 42.7% of Hamilton County residents with Medicare chose Medicare Advantage, which is lower than the 51.1% average across Indiana. What most people do in a county is less important than what fits you. We weigh Medicare Advantage against Original Medicare with Medigap using your doctors, your drugs and your budget.
Who has Medicare in Hamilton County
Hamilton County is a metro county; the U.S. Department of Agriculture describes it as: counties in metro areas of 1 million population or more. Metro counties usually have more hospitals and more insurers competing for Medicare members, so there can be more plans to compare.
CMS counts 58,725 Medicare beneficiaries in Hamilton County (2023). Their average age is 73, about the same as the Indiana average of 72. About 8% are “dual eligible,” meaning they have both Medicare and Medicaid, lower than the state figure of 16%.
Among people in Original Medicare in Hamilton County, CMS reported about 564 emergency room visits and 190 inpatient hospital stays per 1,000 beneficiaries in 2023, which is close to the state average for emergency visits (619) and lower than it for hospital stays (235). About 7% received home health care. These figures describe how people use care under Original Medicare; they do not show what any plan covers or costs.
Sources: CMS Medicare Geographic Variation, 2023; USDA Rural-Urban Continuum Codes, 2023.
Where people live in Hamilton County
People in Hamilton County live in communities such as Fishers (104,094), Carmel (102,296), Noblesville (73,916), Westfield (57,746), Cicero (5,630), Sheridan (3,361) (2023 population estimates, counting only the part of each community that lies inside the county).
Census ZIP Code Tabulation Areas mostly within Hamilton County number 13: 46030, 46031, 46032, 46033, 46034, 46037, 46038, 46060, 46062, 46069, 46074, 46280, 46290. Your exact ZIP code is what decides which plans you can join.
Questions about Medicare in Hamilton County?
Reach out to us: fill out our short form or call (571) 354-0146, and a licensed agent will compare the plans available to you, check your doctors and drugs, and stay with you each year at renewal. For general Medicare information, the federal helpline is 1-800-MEDICARE (1-800-633-4227).
Medicare resources from official sources
- Medicare Plan Finder on Medicare.gov, searchable by ZIP code.
- Social Security: Medicare to enroll or check status.
- Medicare.gov: Medigap on how Medicare Supplement works.
- HealthCare.gov if you are not yet on Medicare.
- Indiana Department of Insurance: Indiana’s insurance regulator, including agent license lookup.
Coverage we offer Hamilton County residents
We work with many carriers, which lets us compare more than one option for Hamilton County households, including ACA health insurance, ICHRA, group health insurance, life insurance, final expense insurance, annuities, Medicare Advantage, Medicare Supplement (Medigap) and Part D drug plans.
Let’s check your Hamilton County options together
We’ll confirm your doctors and prescriptions before you enroll. Our help is free to you.
Get my plan comparisonRead next
- What happens if you do nothing during open enrollment?
- When can you switch Medicare plans? Every enrollment window
- What Medicare Part D actually costs
- Medigap Plan G vs. Plan N
Hamilton County compared with similar Indiana counties
| County | Residents 65+ | Medicare Advantage share | Dual eligible share | Area type |
|---|---|---|---|---|
| St. Joseph County | 47,027 | 55.5% | 15% | Metro |
| Allen County | 63,254 | 64.5% | 21% | Metro |
| Vanderburgh County | 33,660 | 47.7% | 15% | Metro |
| Porter County | 33,101 | 39.9% | 12% | Metro |
| Elkhart County | 32,658 | 53.3% | 16% | Metro |
| Hendricks County | 28,842 | 51.5% | 10% | Metro |
See every Indiana county in our Indiana directory or go to our Indiana Medicare hub.