A list of the state of Indiana's zip codes is available at UnitedStatesZipCodes.org. The zip codes for any U.S. State is available on this site, as of 2015.
To access the list of Indiana zip codes on UnitedStatesZipCodes.org, visit the site, scroll to the bottom of the homepage where it says "Zip Codes by State," select Indiana from the list. Next, in the top right corner of the page with Indiana's zip code, select "View a list of ZIP Codes in Indiana." Once selected, a comprehensive and alphabetically sorted list of all Indiana's zip codes becomes available, as of 2015.