Indiana Code Title 36. Local Government § 36-7-4-202

(1) more than  one hundred eighty thousand (180,000) and less than one hundred eighty-five thousand (185,000);  or

(2) more than  one hundred ten thousand (110,000) and less than one hundred twelve thousand (112,000);

(1) an area plan commission;

(2) an area board of zoning appeals;

(3) an executive director;  and

(4) such staff as the area plan commission considers necessary.

Each municipality and each county desiring to participate in the establishment of a planning department may adopt an ordinance adopting the area planning law, fix a date for the establishment of the planning department, and provide for the appointment of its representatives to the commission.  When a municipality or a county adopts such an ordinance, it shall certify a copy of the ordinance to each legislative body within the county.  When a county and at least one (1) municipality within the county each adopt an ordinance adopting the area planning law and fix a date for the establishment of the department, the legislative body of the county shall establish the planning department.

(1) The time that the commission holds its meetings.

(2) The voting procedures of the commission.