First three digits · Kentucky
ZIP Codes Starting with
19 ZIP codes start with 407, sorted at the Knoxville, TN (SCF 377) sectional center (USPS labeling list L005, effective October 1, 2026) in Kentucky: 11 residential ZIP codes across 3 counties and 8 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 407 mean?
The first digit, 4, is one of ten national areas (Indiana, Kentucky, Michigan and Ohio). The first three, 407, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 407 to the Knoxville, TN (SCF 377) facility. The last two digits pick the delivery area. By residents, the largest town names among the 407 ZIP codes are London, Corbin, Williamsburg, East Bernstadt, Lily and Gray.
The same facility sorts 10 prefixes, 340 ZIP codes in all: 377, 378, 379, 407, 408, 409, 417, 418, 425, 426.
Where are the 407 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 407
| County | ||||||
|---|---|---|---|---|---|---|
| 40701 | Corbin | Whitley County | 30,526 | 203 | $47k | $161k |
| 40702 | Corbin | Whitley County | PO Box or unique | – | – | – |
| 40724 | Bush | Laurel County | PO Box or unique | – | – | – |
| 40729 | East Bernstadt | Laurel County | 5,799 | 77 | $47k | $105k |
| 40730 | Emlyn | Whitley County | PO Box or unique | – | – | – |
| 40734 | Gray | Knox County | 3,602 | 79 | $43k | $132k |
| 40737 | Keavy | Laurel County | 1,782 | 220 | $47k | $137k |
| 40740 | Lily | Laurel County | 3,880 | 257 | $64k | $111k |
| 40741 | London | Laurel County | 23,397 | 113 | $65k | $169k |
| 40742 | London | Laurel County | PO Box or unique | – | – | – |
| 40743 | London | Laurel County | PO Box or unique | – | – | – |
| 40744 | London | Laurel County | 20,137 | 194 | $64k | $173k |
| 40745 | London | Laurel County | PO Box or unique | – | – | – |
| 40750 | London | Laurel County | PO Box or unique | – | – | – |
| 40755 | Pittsburg | Laurel County | PO Box or unique | – | – | – |
| 40759 | Rockholds | Whitley County | 3,122 | 63 | $35k | $97k |
| 40763 | Siler | Whitley County | 411 | 16 | – | $81k |
| 40769 | Williamsburg | Whitley County | 18,218 | 65 | $44k | $106k |
| 40771 | Woodbine | Knox County | 1,915 | 186 | – | $126k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.