US States Zip Directory 2026

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Indiana Zip Codes



Indiana Indiana is a US state, admitted to the United States as the 19th on December 11, 1816. It is located in the midwestern and Great Lakes regions of North America. Indiana is the 38th largest by area and the 15th most populous of the 50 United States. Indiana is the least extensive state in the continental US west of the Appalachian Mountains. Its capital and largest city is Indianapolis. Before it became a territory, varying cultures of indigenous peoples and historic Native Americans inhabited Indiana for thousands of years. Angel Mounds State Historic Site, one of the best preserved ancient earthwork mound sites in the United States, can be found in Southwestern Indiana near Evansville. Residents of Indiana are known as Hoosiers. The etymology of the word is disputed, but the leading theory as advanced by the Indiana Historical Bureau and the Indiana Historical Society has "Hoosier" originating from the upland South region of the U.S. as a derogatory slang term for a rough countryman, a country bumpkin.

State Zip Code City County Area Codes
IN 46031 Atlanta Hamilton County 317, 463, 765, 812, 930
IN 46032 Carmel Hamilton County 317, 463
IN 46033 Carmel Hamilton County 317, 463
IN 46034 Cicero Hamilton County 317, 463, 765
IN 46035 Colfax Clinton County 765
IN 46036 Elwood Madison County 765, 812, 930
IN 46037 Fishers Hamilton County 317, 463
IN 46038 Fishers Hamilton County 317, 463
IN 46039 Forest Clinton County 765
IN 46040 Fortville Hamilton County 317, 463, 765
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Map of Indiana


ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.


ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.