Louisville/Jefferson County, KY-IN metro area ZIP codes
The Louisville/Jefferson County, KY-IN metropolitan statistical area (CBSA 31140) covers 12 counties in Indiana and Kentucky and 166 ZIP codes.
- ZIP codes
- 166
- Population
- 1,378,509
- Avg. median income
- $78,000population-weighted
- Counties
- 12
Click anywhere on the map to see which ZIP code it's in.
Counties in the Louisville/Jefferson County, KY-IN area
- Clark County, IN (central)
- Floyd County, IN (central)
- Harrison County, IN
- Washington County, IN
- Bullitt County, KY (central)
- Henry County, KY
- Jefferson County, KY (central)
- Meade County, KY
- Nelson County, KY
- Oldham County, KY (central)
- Shelby County, KY
- Spencer County, KY
ZIP codes in the Louisville/Jefferson County, KY-IN area
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Louisville/Jefferson County, KY-IN metro area?
166 ZIP codes, based on each ZIP code's main county.
Which counties make up the Louisville/Jefferson County, KY-IN area?
Clark County, IN, Floyd County, IN, Harrison County, IN, Washington County, IN, Bullitt County, KY, Henry County, KY, Jefferson County, KY, Meade County, KY, Nelson County, KY, Oldham County, KY, Shelby County, KY and Spencer County, KY.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).