An accurate record of street numbers assigned to buildings within the city limits shall be maintained by an appropriate department of the city, as designated by the mayor. This record shall be kept on a map or maps designated for that purpose. (Ord. 6038 § 2, 2006; Ord. 5998 § 2, 2006; Ord. 2856 § 2, 1974; 1957 code § 2.15.080.)