The list below includes the cities that the US Post Office accepts for ZIP code 40231.
The preferred city may not be the city in which the ZIP is located. The city for 40231 is usually the name of the main post office.
When mailing your package or letter, always include the preferred or acceptable cities.
Using any city in the list of unacceptable cities may result in delays.
Primary/preferred city:
Louisville, KY
Stats and Demographics for the 40231 ZIP Code
ZIP code 40231 is located in central Kentucky and covers an extremely small land area compared to other ZIP codes in the United States.