Mo. Rev. Stat. § 88.110
Before any ordinance making provision for such reassessment, or the creation of such assessment district, shall be put upon its passage, the board of aldermen, or other local legislative body before which it is pending, shall appoint a day upon which it will hear and consider any and all objections to such ordinance and shall give public notice of the time and place and matter thus to be considered, which said notice shall be addressed to all persons interested; shall set forth in full the pending ordinance; shall state that at the appointed time and place all landowners within the assessment district defined by said ordinance, and all other persons interested, may appear before said legislative body and be heard upon all matters pertinent to said ordinance; and shall be published once a week for two weeks, the last publication to be at least one week before such day of hearing, in some newspaper of general circulation published in the city wherein said ordinance is pending, or if there be no newspaper published in said city, then in the county wherein said city is situated. After said hearing has been had, said ordinance may be passed, rejected or amended as justice may require.
§ 88.110, RSMo
RSMo 1939 § 7380