in a particular. Business Owner s Guide Licenses We didn t automatically geolocate you so we set your default location to Indianapolis, IN. If you re an Indiana resident, feel free to update your default location. Indiana Government, lifestyle, demographics, elected officials, education, social security, and other information from the State of Indiana. ZIP Code Wikipedia ZIP Colo Codes are a system of postal codes used by the United States Postal Service since 1963. The term ZIP, an acronym for Zone Improvement Plan, was chosen to suest.