Jefferson County
For Americans thinking of retiring to Jefferson County, Kentucky, from another state or instead of a move abroad. Jefferson County has 795,222 residents, 147,293 of them aged 65 or older (18.5 %) (US Census Bureau, county population estimates by age, 1 July 2025). Largest places: Louisville/Jefferson County, Jeffersontown, St. Matthews (Census, 1 July 2024).
Where Jefferson County stands, on the six criteria
Jefferson County's own figures, each against every US county that has the same figure. Cost of living is its area's: the Bureau of Economic Analysis publishes no price level for a single county.
| Criterion | Jefferson County |
|---|---|
| Cost of living BEA price level, all items (US = 100); lower is better |
93.1 Cheaper than 27% of the other 3,142 US counties
Every county in the area shares this figure. BEA Regional Price Parities 2024, all items, Louisville/Jefferson County, KY-IN metropolitan area · figure for 2024 · checked 2026-10-28
|
| Taxes on a retired couple state and local tax on the example retired couple, USD a year; lower is better |
USD $3,010 (90% margin USD $2,953–$3,067) Lower than 54% of the other 3,110 US counties
The state's published 2025 income-tax rules, the county's own local income tax where one is levied, and the county's Census ACS property-tax ratio, applied to the example household · figure for 2025
|
| Healthcare access share of residents 65+ living in a county with a 4- or 5-star CMS hospital; higher is better |
2 hospitals in the county rated 4 or 5 stars by CMS A fact for this county, not a ranking: a county without such a hospital may sit near one next door.
CMS, Hospital General Information (Care Compare), hospital overall star rating, release of 13 Aug 2026 · figure for 2026 · checked 2026-10-27
|
| Safety homicides per 100,000 a year, 2020–2024, by state of residence; lower is better |
21.2 per 100,000 a year (95% interval 19.8–22.7) Lower than 11% of the other 767 US counties
CDC WONDER, Underlying Cause of Death 2018-2024 (Single Race, final), by county of residence · figure for 2024 · checked 2026-09-24
|
| Climate months a year whose mean daily high is 18–29 °C (64–84 °F), 1981–2010; more is better |
5.0 months a year More than 39% of the other 3,143 US counties
CHELSA V2.1 monthly maximum temperature, 1981-2010 (~1 km), averaged over the county, Karger et al. · figure for 2010 · checked 2026-10-27
|
| Natural-hazard risk expected yearly loss to buildings from natural hazards, per USD $1,000 of buildings; lower is better |
USD $1.54 per USD $1,000 of buildings Lower than 35% of the other 3,143 US counties
FEMA, National Risk Index v1.20 (December 2025), county expected annual loss to buildings (EAL_VALB) · figure for 2025 · checked 2026-10-28
|
Taxes on a retired couple in Jefferson County, Kentucky
The published example couple's state and local tax in Jefferson County for tax year 2025, in its three parts. Only the income tax is the same across Kentucky; the property tax uses Jefferson County's own Census figures.
| State income tax Kentucky's 2025 rules — the same in every Kentucky county |
USD $0 |
|---|---|
| Local income tax none in this calculation: a county income tax is held only for Maryland and Indiana |
USD $0 |
| Property tax on a USD $350,000 home Jefferson County's own median taxes paid ÷ median home value |
USD $3,010 |
| State and local tax, a year | USD $3,010 |
Sources: Kentucky Department of Revenue, 2025 Kentucky Individual Income Tax Forms (Form 740 packet); US Census Bureau, American Community Survey 2020-2024 5-year estimates, table B25103, county.
How Kentucky taxes each kind of retirement income, line by line
What Medicare costs in Jefferson County, Kentucky
For the published example couple, both 67 and married: what Medicare premiums cost a year for two in Jefferson County, Kentucky, and the most a bad year can cost. What care itself costs depends on a person's health, so it is not estimated here.
Medicare Advantage, with drug coverage
USD $4,870 a year for two in premiums (from USD $4,870)
At most USD $19,170 in a bad year (from USD $13,370), with each person's in-network out-of-pocket maximum
The middle of the 30 plans offered here; "from" is the lowest premium among them.
Original Medicare, with a drug plan
USD $6,654 a year for two in premiums (from USD $4,997)
Medigap: no federal price list — not in this total.
No yearly maximum on Original Medicare alone.
Part B for two, plus the middle of the 8 standalone drug plans offered in the state.
The 2027 Part B premium is not yet published (CMS usually publishes it in November); 2026's is used.
Source: CMS, Medicare Advantage and Part D Landscape, plan year 2027; CMS, 2026 Medicare Parts A & B Premiums and Deductibles (fact sheet, 14 Nov 2025).
Retiring to Jefferson County, Kentucky: pros and cons, by the figures
Retiring to Jefferson County, judged on the figures above: a pro is a figure in the top fifth of US counties, a con one in the bottom fifth. Figures in between get no verdict.
Pros
None of Jefferson County's figures is in the top fifth of US counties.
Cons
- Safety: higher than 89% of the other 767 US counties (21.2 per 100,000 a year). CDC WONDER, Underlying Cause of Death 2018-2024 (Single Race, final), by county of residence
The largest places in Jefferson County
By population in the county; a place split across counties counts only the part in Jefferson County. We do not cover these places in depth yet.
- Louisville/Jefferson County: 640,796 residents
- Jeffersontown: 29,388 residents
- St. Matthews: 17,806 residents
US Census Bureau, Vintage 2024 sub-county population estimates (SUB-EST2024), 1 July 2024.
Would your money go further in Jefferson County?
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