(a) The superior courts of the several counties shall have exclusive jurisdiction in all matters of adoption, except such jurisdiction as may be granted to the juvenile courts.

(b) All petitions under this chapter shall be filed in the county in which any petitioner resides, except that:

(1) Upon good cause being shown, the court of the county of the child's domicile or of the county in which is located any child-placing agency having legal custody of the child sought to be adopted may, in its discretion, allow the petition to be filed in that court; and

(2) Any person who has been a resident of any United States Army post or military reservation within this state for six months next preceding the filing of the petition for adoption may file the petition in any county adjacent to the United States Army post or military reservation.