Medicare in Johnson County by the numbers
| Johnson County | Indiana | |
|---|---|---|
| Residents age 65 and older | 26,818 | 1,179,148 statewide |
| Share of residents age 65+ | 16.0% | 17.2% statewide |
| People with Medicare | 33,296 | 1,432,708 statewide |
| Enrolled in Medicare Advantage | 17,337 | 731,624 statewide |
| Medicare Advantage share | 52.1% | 51.1% statewide |
Data: U.S. Census Bureau (2023 population estimates); CMS, September 2026. Medicare Advantage share is enrollees divided by people with Medicare.
With roughly 26,818 residents age 65 and older, Johnson County is 10th among 92 Indiana counties for older residents. That group is 16.0% of its population, compared with 17.2% across Indiana. About 10,038 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 58% ages 65 to 74, 31% ages 75 to 84 and 11% age 85 and up (Census 2023). About 52.1% of people with Medicare in Johnson County are enrolled in a Medicare Advantage plan. That is close to the Indiana average of 51.1%. A county average does not tell you which kind of plan fits you. Whether Medicare Advantage or Original Medicare with a Medigap plan is the better fit depends on your doctors, your prescriptions and how you want to handle costs, so we compare both for your ZIP code.
Who has Medicare in Johnson County
Johnson 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 31,987 Medicare beneficiaries in Johnson County (2023). Their average age is 73, about the same as the Indiana average of 72. About 12% are “dual eligible,” meaning they have both Medicare and Medicaid, lower than the state figure of 16%.
Among people in Original Medicare in Johnson County, CMS reported about 563 emergency room visits and 222 inpatient hospital stays per 1,000 beneficiaries in 2023, which is close to the state average for emergency visits (619) and close to 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.
Insurers choose which counties to serve each year, which means the Medicare Advantage and Part D plans you can pick in Johnson County can be different from the ones offered next door. We are not based in Johnson County; we help Johnson County residents by phone or video call.
Hospitals located in Johnson County
The Centers for Medicare & Medicaid Services (CMS) lists this hospital in Johnson County:
- Johnson Memorial Hospital — Franklin (acute care; government-owned; emergency services; CMS overall rating 5 of 5)
Being located in the county is not the same as being in your plan’s network. Each Medicare Advantage plan builds its own network, so we confirm that your hospital and your doctors are included before you choose. Ratings are CMS Care Compare overall hospital star ratings; they describe the hospital, not whether a plan covers it. Source: CMS Hospital General Information.
Johnson County: communities and ZIP codes
The largest communities in Johnson County by 2023 Census population estimates are Greenwood (66,296), Franklin (25,908), Bargersville (11,075), New Whiteland (5,773), Whiteland (5,415), Edinburgh (3,869). Each figure counts only the people living inside the county.
We look up plans by ZIP code. In Johnson County, that means areas such as 46106, 46131, 46142, 46143, 46162, 46181, 46184, based on Census ZIP Code Tabulation Areas that lie mostly in the county.
Questions about Medicare in Johnson 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 Johnson County residents
We work with many carriers, which lets us compare more than one option for Johnson County households, including Medicare Advantage, Medicare Supplement (Medigap), Part D drug plans, ACA health insurance, ICHRA, group health insurance, life insurance, final expense insurance and annuities.
Get a clear answer for Johnson County
A short call is enough to compare your options. Our help is free to you.
Get my plan comparisonRead next
- What happens if you do nothing during open enrollment?
- Medicare 101 for families
- Why a Medicare Advantage plan drops a doctor or drug
- When can you switch Medicare plans? Every enrollment window
Johnson County compared with similar Indiana counties
| County | Residents 65+ | Medicare Advantage share | Dual eligible share | Area type |
|---|---|---|---|---|
| Madison County | 25,091 | 61.4% | 18% | Metro |
| Hendricks County | 28,842 | 51.5% | 10% | Metro |
| Tippecanoe County | 23,795 | 45.0% | 14% | Metro |
| LaPorte County | 22,343 | 45.0% | 15% | Metro |
| Clark County | 21,563 | 47.5% | 16% | Metro |
| Monroe County | 21,295 | 41.6% | 15% | Metro |
See every Indiana county in our Indiana directory or go to our Indiana Medicare hub.