County ZIP codes · Kentucky · FIPS 21223
Trimble County, KY ZIP Codes
Trimble County, Kentucky has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 3 of the residential ones lie mainly in Trimble County and 2 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $59,477 in 40006 (Bedford) to $97,939 in 40055 (Pendleton) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Trimble 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 $59,477 and $76,607.
They carry 5 postal town names: Carrollton, Bedford, Milton, Campbellsburg, Pendleton.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 5 residential ZIP codes in Trimble County
3 ZIP codes lie mainly in Trimble County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 40006 | Bedford | 5,068 | 57 | $60k | $182k | 99% |
| 40045 | Milton | 3,251 | 65 | $77k | $175k | 72% |
| 40055 | Pendleton | 1,942 | 82 | $98k | $295k | 48% |
Partly in Trimble County
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?
5 ZIP codes of Trimble County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Trimble | Elsewhere |
|---|---|---|
| 41008 | 4% | Carroll County 96% |
| 40006 | 99% | Carroll County 1% |
| 40045 | 72% | Carroll County 28% |
| 40011 | 20% | Henry County 71%; Carroll County 9% |
| 40055 | 48% | Henry County 30%; Oldham County 23% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Trimble County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Trimble County's ZIP codes use 2 prefixes: 400 and 410.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.