Oldham County, KY ZIP Codes
9 ZIP codes cover all or part of Oldham County, Kentucky. The Census Bureau counts 69,257 residents in the county, with a median household income of $122,497 and a median home value of $393,100. Median household income ranges from $80,750 in 40068 to $152,727 in 40059. Its largest communities include Louisville/Jefferson County metro government (balance), La Grange, Crestwood, Prospect and Buckner.
Oldham County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 69,257 |
| Households | 23,025 |
| Median household income | $122,497 |
| Median home value | $393,100 |
| Median age | 39.9 |
| Median rent | $1,219 |
All 9 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 85,536 |
| Households (sum of ZIP codes) | 29,951 |
| Median household income, range across ZIP codes | $80,750 (40068) to $152,727 (40059) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $123,224 |
| Homeowners | 86.4% |
| Households with kids under 18 | 38.0% |
| Moved in the past year | 10.8% |
| Carrier routes in EDDM2GO's route library | 60 routes, 32,818 homes (9 of 9 ZIP codes) |
Top facts
- Highest median household income in Oldham County: 40059 ($152,727)
- Most residents: 40031 (26,259 people)
- Highest homeownership: 40056 (92.5% own their home)
- Most households with kids: 40026 (47.3% of households)
- Most new movers: 40031 (17.2% moved in last year)
- Youngest median age: 40026 (38.0 years)
- Highest median home value: 40059 ($559,300)
Every ZIP code in Oldham County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40031 | La Grange | 26,259 | 8,232 | $98,513 | $341,000 | 82.0% | 35.4% | 17.2% | 17 | 9,742 | 93% of its land |
| 40014 | Crestwood | 23,101 | 8,168 | $121,189 | $393,700 | 88.0% | 45.0% | 8.1% | 13 | 8,833 | 100% of its land |
| 40059 | Prospect | 20,892 | 8,250 | $152,727 | $559,300 | 87.4% | 32.8% | 7.4% | 16 | 9,638 | 61% of its land |
| 40026 | Goshen | 5,975 | 1,969 | $134,254 | $432,100 | 92.2% | 47.3% | 13.8% | 4 | 2,164 | 100% of its land |
| 40056 | Pewee Valley | 3,441 | 1,175 | $134,115 | $339,900 | 92.5% | 41.4% | 5.8% | 3 | 1,295 | 100% of its land |
| 40068 | Smithfield | 2,570 | 922 | $80,750 | $325,300 | 89.4% | 29.3% | 8.2% | 2 | 1,094 | 14% of its land |
| 40055 | Pendleton | 1,942 | 740 | $97,939 | $294,900 | 85.7% | 25.0% | 2.8% | 3 | 831 | 23% of its land |
| 40010 | Buckner | 678 | 223 | $196,125 | $591,500 | 72.2% | 44.8% | 5.8% | 1 | 294 | 100% of its land |
| 40077 | Westport | 678 | 272 | $73,333 | $196,400 | 71.3% | 37.1% | 0.6% | 1 | 230 | 100% of its land |
A ZIP code is listed for Oldham County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Louisville/Jefferson County metro government (balance) — 631,818 residents · 23 ZIP codes
- La Grange — 10,311 residents · 1 ZIP code
- Crestwood — 6,356 residents · 1 ZIP code
- Prospect — 4,542 residents · 1 ZIP code
- Buckner — 4,119 residents · 3 ZIP codes
- Orchard Grass Hills — 1,912 residents · 1 ZIP code
- Pewee Valley — 1,483 residents · 1 ZIP code
- Goshen — 989 residents · 1 ZIP code
- River Bluff — 445 residents · 1 ZIP code
- Westport — 275 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Oldham County — 7 ZIP codes ranked
- ZIP codes with the highest home values in Oldham County — 7 ZIP codes ranked
- ZIP codes with the highest homeownership in Oldham County — 7 ZIP codes ranked
- ZIP codes with the most families with kids in Oldham County — 7 ZIP codes ranked
- ZIP codes with the most new movers in Oldham County — 7 ZIP codes ranked
- Youngest ZIP codes in Oldham County — 7 ZIP codes ranked
- Oldest ZIP codes in Oldham County — 7 ZIP codes ranked
- Fastest-growing ZIP codes in Oldham County — 7 ZIP codes ranked
Price a mailing to Oldham County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Oldham County, KY?
- 40031, 40014, 40059, 40026, 40056, 40068, 40055, 40010 and 40077. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Oldham County?
- 69,257 residents in 23,025 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Oldham County?
- $122,497 for the county as a whole. Its ZIP codes range from $80,750 (40068) to $152,727 (40059).
- Which Oldham County ZIP code has the highest median household income?
- 40059, at $152,727, among ZIP codes with at least 1,000 residents. See the full ranking of Oldham County ZIP codes by income.
- How many carrier routes and mailboxes are in Oldham County?
- For the 9 of 9 ZIP codes in EDDM2GO's stored route library: 60 carrier routes reaching 32,818 residential and 1,301 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.