| City: | Franklin, Kentucky |
| County: | Simpson County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:01:19 AM |
| Population: | No Population Data |
| Area Codes: | 270 / 364 |
| Classification: | PO Box |
| Coordinates: | 36.7223, -86.5772 |
| Quick Link: |
Franklin's street delivery happens through the neighboring ZIP code 42134, which surrounds this PO Box facility. Customers who maintain boxes here do so by choice rather than necessity. The boxes serve everyone from local shop owners who want early mail access to residents preferring the security of a locked box. This arrangement is typical for Kentucky's smaller county seats, where a dedicated PO Box ZIP sits alongside a separate street delivery zone.
This ZIP code contains no street delivery routes. All addresses served by 42135 are PO Box numbers. Street delivery for the Franklin area is handled through ZIP code 42134.
ZIP Code 42135 supports both business and residential activity. According to the Business Census (2024), there are 16 business establishments, employing about 203 people with an annual payroll of $11,244,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,761Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 16Source: CBP |
| 1st Quarter Payroll: | $2,747,000Source: CBP |
| Annual Payroll: | $11,244,000Source: CBP |
| # of Employees: | 203Source: CBP |
ZIP Code 42135 is located in Simpson County, Kentucky, within the Franklin, KY Metropolitan Statistical Area (CBSA 23190) and Kentucky's 1st Congressional District. This Micro area has a population of 19,786 people, about 0.00% of whom live in ZIP Code 42135. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Franklin, KYSource: Census |
| CBSA Number: | 23190Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 19,786Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 12079.5 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2128918Source: Census |
| Place Name: | Franklin city; KentuckySource: Census |
ZIP Code 42135 is in the Simpson County School District, which serves grades Pre-Kindergarten thru 12th. There are 2 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.