The city of Attica and the surrounding area under the jurisdiction of the Attica city plan commission are divided into nine districts in order to carry out the purposes of this title. The districts shall be known and designated throughout this title as follows:

In determining the boundaries of districts, and establishing the regulations applicable to each district, due and careful consideration has been given to existing conditions, the character of buildings erected in each district may be adapted and the conservation of property values throughout the city.

Where uncertainty exists as to the exact boundaries of any district as shown on the zone maps, the following rules shall apply:

Territory which may hereafter be annexed to the city shall remain as zoned unless changed by amendment of this title.

Whenever any street, alley, public way, railroad right-of-way, waterway, or other similar area is vacated by proper authority, the districts adjoining each side of such street, alley, public way, railroad right-of-way, waterway, or similar areas, shall be extended automatically to the center of such vacation and all area included in the vacation shall then and thenceforth be subject to all appropriate regulation of the extended districts. [Ord. 6, 1990 § 6-6; Code 1999 § 10-13.]