A certified copy of the order creating such district shall be filed with the county clerk of each of the counties included in whole or in part in such district and shall be entered of record. A copy of such order shall also be published in each of the counties situated in whole or in part within such district in a newspaper published and having a general circulation in such county, or if there is no such newspaper in any such county, a copy of the order shall be posted in five (5) conspicuous public places within such county. A certified copy of such order shall also be filed with the secretary of state. Upon such filing and publication or posting, the incorporation of such district shall be complete.