Indiana Code Title 36. Local Government § 36-1.5-4-1

(1) Two (2) or more counties.  A county reorganizing under this subdivision must be adjacent to at least one (1) other county participating in the reorganization.

(2) Two (2) or more townships located entirely within the same county.  A township reorganizing under this subdivision must be adjacent to at least one (1) other township participating in the reorganization.

(3) Two (2) or more municipalities.  A municipality reorganizing under this subdivision must be adjacent to at least one (1) other municipality participating in the reorganization.

(4) Two (2) or more school corporations.  A school corporation reorganizing under this subdivision must be adjacent to at least one (1) other school corporation participating in the reorganization.

(5) Two (2) or more municipal corporations, other than a unit or a school corporation, that have substantially equivalent powers.  A municipal corporation reorganizing under this subdivision must be adjacent to at least one (1) other municipal corporation participating in the reorganization.

(6) Two (2) or more special taxing districts that are adjacent to at least one (1) other special taxing district participating in the reorganization.

(7) A township and a municipality that is located in any part of the same township.

(8) A county and one (1) or more townships that are located in the county.

(9) A municipality and a county that does not contain a consolidated city.

(10) A school corporation and a county or municipality in which a majority of the students of the school corporation have legal settlement (as defined by IC 20-18-2-11).

(11) A municipal corporation, other than a unit or a school corporation, and a county or municipality in which a majority of the population of the municipal corporation resides.

(1) any political subdivisions that did not participate in the public question on the reorganization are not reorganized under this article;

(2) the reorganization affects only those political subdivisions in which the reorganization is approved as specified in this article;  and

(3) the reorganization does not affect the rights, powers, and duties of any political subdivisions in the county in which the reorganization is not approved as specified in this article.