County ZIP codes · Kentucky · FIPS 21179
Nelson County, KY ZIP Codes
Nelson County, Kentucky has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 9 residential and 1 for PO boxes or a single organization. 8 of the residential ones lie mainly in Nelson County and 1 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $66,486 in 40008 (Bloomfield) to $100,226 in 40013 (Coxs Creek) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Nelson County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $66,486 and $80,337.
They carry 9 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 9 residential ZIP codes in Nelson County
8 ZIP codes lie mainly in Nelson County; 1 more reaches into it from a neighboring county and follows the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 40004 | Bardstown | 30,601 | 210 | $67k | $242k | 100% |
| 40013 | Coxs Creek | 6,670 | 88 | $100k | $265k | 77% |
| 40051 | New Haven | 4,658 | 51 | $80k | $213k | 68% |
| 40008 | Bloomfield | 4,020 | 45 | $67k | $224k | 83% |
| 40107 | Boston | 2,187 | 41 | $60k | $204k | 100% |
| 40012 | Chaplin | 712 | 64 | $105k | $219k | 78% |
| 40052 | New Hope | 655 | 29 | $46k | – | 45% |
| 40020 | Fairfield | 199 | 419 | $91k | – | 100% |
Partly in Nelson County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 40037 | Loretto | 2,793 | 56 | $70k | $215k | 12% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
6 ZIP codes of Nelson County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Nelson | Elsewhere |
|---|---|---|
| 40013 | 77% | Spencer County 14%; Bullitt County 10% |
| 40051 | 68% | Larue County 29%; Hardin County 3% |
| 40008 | 83% | Spencer County 17% |
| 40037 | 12% | Marion County 88% |
| 40012 | 78% | Anderson County 22% |
| 40052 | 45% | Larue County 37%; Marion County 18% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 40048 | Nazareth |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Nelson County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Nelson County's ZIP codes use 2 prefixes: 400 and 401.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.