Franklin County, KY ZIP Codes
2 ZIP codes cover all or part of Franklin County, Kentucky: 40601 and 40347. The Census Bureau counts 51,842 residents in the county, with a median household income of $65,298 and a median home value of $216,600. Median household income ranges from $65,732 in 40601 to $85,270 in 40347. Its largest communities include Frankfort.
Franklin County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 51,842 |
| Households | 22,718 |
| Median household income | $65,298 |
| Median home value | $216,600 |
| Median age | 40.8 |
| Median rent | $967 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 55,853 |
| Households (sum of ZIP codes) | 24,270 |
| Median household income, range across ZIP codes | $65,732 (40601) to $85,270 (40347) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $66,886 |
| Homeowners | 65.5% |
| Households with kids under 18 | 26.7% |
| Moved in the past year | 13.4% |
| Carrier routes in EDDM2GO's route library | 44 routes, 24,354 homes (2 of 2 ZIP codes) |
Top facts
- Highest median household income in Franklin County: 40347 ($85,270)
- Most residents: 40601 (51,893 people)
- Highest homeownership: 40347 (77.9% own their home)
- Most households with kids: 40601 (26.8% of households)
- Most new movers: 40601 (13.7% moved in last year)
- Youngest median age: 40601 (41.0 years)
- Highest median home value: 40347 ($354,000)
Every ZIP code in Franklin County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 40601 | Frankfort | 51,893 | 22,836 | $65,732 | $216,700 | 64.7% | 26.8% | 13.7% | 42 | 25,240 | 89% of its land |
| 40347 | Midway | 3,960 | 1,434 | $85,270 | $354,000 | 77.9% | 24.5% | 9.4% | 2 | 878 | 12% of its land |
A ZIP code is listed for Franklin 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
- Frankfort — 28,503 residents · 1 ZIP code
Price a mailing to Franklin County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Franklin County, KY?
- 40601 and 40347. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Franklin County?
- 51,842 residents in 22,718 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Franklin County?
- $65,298 for the county as a whole. Its ZIP codes range from $65,732 (40601) to $85,270 (40347).
- Which Franklin County ZIP code has the highest median household income?
- 40347, at $85,270, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Franklin County?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 44 carrier routes reaching 24,354 residential and 1,766 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.