Franklin, KY micro area ZIP codes
The Franklin, KY micropolitan statistical area (CBSA 23190) covers 1 county in Kentucky and 2 ZIP codes.
- ZIP codes
- 2
- Population
- 19,380
- Avg. median income
- $59,100population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Franklin, KY area
ZIP codes in the Franklin, KY area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 42134 | Franklin | Simpson County | 19,380 | $59,113 | $247,700 |
| 42135 PO Box | Franklin | Simpson County | — | — | — |
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 Franklin, KY micro area?
2 ZIP codes, based on each ZIP code's main county.
Which counties make up the Franklin, KY area?
Simpson County.
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).