Franklin, KY ZIP codes
Franklin, Kentucky has 2 ZIP codes, including 1 PO Box ZIP. They are in Simpson County.
- Population in these ZIPs
- 19,380
- Avg. median income
- $59,100population-weighted
- Typical home value
- $247,700population-weighted
- Metro area
- Franklin, KY
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Franklin, KY ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 42134 | Simpson County | 19,380 | $59,113 | $247,700 |
| 42135 PO Box | 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
Cities near Franklin
- Woodburn 9 mi
- Auburn 15 mi
- Alvaton 15 mi
- Adairville 15 mi
- Rockfield 16 mi
- Adolphus 16 mi
- Bowling Green 18 mi
- Russellville 20 mi
- Scottsville 22 mi
- Olmstead 24 mi
- Oakland 26 mi
- Allensville 29 mi
Frequently asked questions
What county is Franklin, Kentucky in?
Franklin ZIP codes are in Simpson County.
Which Franklin ZIP codes are PO Boxes?
42135 is a PO Box or single-organization ZIP code; it has no residential delivery area.