MapIndy, Property Report Cards, the Treasurer's payment portal, the Indy Zoning Browser, and the Open Indy Data Portal — what each free official Marion County tool actually shows, and which one answers which property question.
Every Indiana parcel has an 18-digit state number defined by 50 IAC 26-8-1 — county code, township-range, section, block, parcel, and taxing district. How to read it, why formats differ between systems, and how to search with it anywhere.