Indiana Code Title 6. Taxation § 6-1.1-36-13

Sec. 13. When a political subdivision is formed, the auditor of the county in which the political subdivision is situated shall, at the written request of the legislative body of the political subdivision, prepare a list of all the lands and lots within the limits of the political subdivision, and the county auditor shall deliver the list to the appropriate township assessor, or the county assessor if there is no township assessor for the township, on or before the assessment date which immediately follows the date of incorporation.  The county auditor shall use the records in the auditor's office in order to compile the list.