Jeffersontown, KY ZIP Codes
3 ZIP codes serve Jeffersontown, Kentucky: 40299, 40220 and 40223. Together they are home to 100,083 residents in 42,725 households. That is more than the 29,199 people counted inside Jeffersontown city limits, because these ZIP codes reach past its boundary. Median household income ranges from $78,434 in 40220 to $96,607 in 40223.
Jeffersontown city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 29,199 |
| Households | 12,479 |
| Median household income | $81,506 |
| Median home value | $250,700 |
| Median age | 40.5 |
| Median rent | $1,320 |
All 3 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 100,083 |
| Households (sum of ZIP codes) | 42,725 |
| Median household income, range across ZIP codes | $78,434 (40220) to $96,607 (40223) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $87,096 |
| Homeowners | 71.1% |
| Households with kids under 18 | 26.1% |
| Moved in the past year | 12.3% |
| Carrier routes in EDDM2GO's route library | 84 routes, 46,894 homes (3 of 3 ZIP codes) |
Top facts
- Highest median household income in Jeffersontown: 40223 ($96,607)
- Most residents: 40299 (42,207 people)
- Highest homeownership: 40299 (74.8% own their home)
- Most households with kids: 40299 (28.7% of households)
- Most new movers: 40220 (14.1% moved in last year)
- Youngest median age: 40220 (39.3 years)
- Highest median home value: 40223 ($362,500)
Every ZIP code in Jeffersontown
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40299 | Louisville | 42,207 | 17,163 | $89,440 | $290,200 | 74.8% | 28.7% | 10.4% | 35 | 21,490 | 15% of its land |
| 40220 | Louisville | 35,078 | 15,591 | $78,434 | $264,200 | 66.1% | 24.7% | 14.1% | 28 | 16,578 | 12% of its land |
| 40223 | Louisville | 22,798 | 9,971 | $96,607 | $362,500 | 72.5% | 23.9% | 12.9% | 21 | 12,628 | 10% of its land |
A ZIP code is listed for Jeffersontown when at least 10% of its land lies inside Jeffersontown city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Jeffersontown. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Jeffersontown.
Counties
- Jefferson County — 39 ZIP codes
Nearby cities sharing these ZIP codes
- Louisville/Jefferson County metro government (balance) — 23 ZIP codes
- Middletown — 3 ZIP codes
- Lyndon — 3 ZIP codes
- Douglass Hills — 2 ZIP codes
Price a mailing to Jeffersontown ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Jeffersontown, KY?
- 40299, 40220 and 40223. A ZIP code is listed for Jeffersontown when at least 10% of its land lies inside Jeffersontown city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Jeffersontown.
- What is the population of Jeffersontown, KY?
- The Census Bureau counts 29,199 residents inside Jeffersontown city limits (ACS 2020–2024). The 3 ZIP codes that serve Jeffersontown hold 100,083 residents in all.
- What is the median household income in Jeffersontown, KY?
- $81,506 inside Jeffersontown city limits, per the Census Bureau. Across its ZIP codes the medians run from $78,434 to $96,607.
- Which Jeffersontown ZIP code has the highest median household income?
- 40223, at $96,607, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Jeffersontown, KY?
- For the 3 of 3 ZIP codes in EDDM2GO's stored route library: 84 carrier routes reaching 46,894 residential and 3,800 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.