Indiana Code Title 36. Local Government § 36-7-5.1-11

Sec. 11. (a) Each member of the commission must have:

(b) A challenge to the appointment of a member based on the qualifications described in subsection (a) must be filed within thirty (30) days after the appointment.  The challenge may be filed in the circuit court, superior court, or probate court of any county that contains the entire joint district or any part of the joint district.

(c) Except as provided in subsection (d), a member must be a resident of a county where a part of the joint district is located or reside within ten (10) miles of the borders of the district.

(d) In a joint district that contains all or part of a county having a population of more than eighty-two thousand (82,000) and less than eighty-three thousand (83,000), two (2) of the members appointed by the legislative body of that county under section 9(1) of this chapter must, in addition to the requirements of subsections (a) and (b), be residents of any township that is entirely or partially located within the joint district.