Oldham County, Kentucky ZIP codes
8 ZIP codes are in Oldham County, plus 4 that cross in from neighboring counties. It's part of the Louisville/Jefferson County, KY-IN metro area.
- ZIP codes
- 8
- Population in these ZIPs
- 81,024
- Avg. median income
- $123,700population-weighted
- Cities & towns
- 7
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Oldham County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 40010 | Buckner | 678 | $196,125 | $514,300 |
| 40014 | Crestwood | 23,101 | $121,189 | $467,800 |
| 40026 | Goshen | 5,975 | $134,254 | $511,700 |
| 40031 | La Grange | 26,259 | $98,513 | $390,800 |
| 40032 PO Box | La Grange | — | — | — |
| 40056 | Pewee Valley | 3,441 | $134,115 | $364,400 |
| 40059 | Prospect | 20,892 | $152,727 | $631,100 |
| 40077 | Westport | 678 | $73,333 | $335,400 |
ZIP codes partly in Oldham County
These ZIP codes are mostly in a neighboring county but cover part of Oldham County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 40055 | Pendleton | Trimble County | 1,942 | $97,939 | $349,000 |
| 40068 | Smithfield | Henry County | 2,570 | $80,750 | $411,100 |
| 40241 | Louisville | Jefferson County | 30,696 | $94,078 | $414,600 |
| 40245 | Louisville | Jefferson County | 39,835 | $122,948 | $485,600 |
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 and towns in Oldham County
Nearby counties
Frequently asked questions
How many ZIP codes are in Oldham County, Kentucky?
8 ZIP codes are mainly in Oldham County, and 4 more ZIP codes from neighboring areas reach partly into it.
What cities are in Oldham County?
ZIP codes in Oldham County use the city names Buckner, Crestwood, Goshen, La Grange, Pewee Valley, Prospect and Westport.
What metro area is Oldham County in?
Oldham County is part of the Louisville/Jefferson County, KY-IN metropolitan statistical area.