Section 234. Creation, appointment and qualifications

Each  city  and
  incorporated village is hereby authorized  and  empowered  to  create  a
  commission  to be known as the city or village planning commission. Such
  commission shall be so created in incorporated villages by resolution of
  the trustees, in cities by ordinance of the common council, except  that
  in cities of the first class, having more than a million inhabitants, it
  shall  be  by  resolution  of the board of estimate and apportionment or
  other similar local  authority.  In  cities  of  the  first  class  such
  commission  shall  consist  of  not  more  than eleven, in cities of the
  second class of not more than nine, in cities of  the  third  class  and
  incorporated  villages of not more than seven members. Such ordinance or
  resolution shall specify the public officer or body of said municipality
  that shall appoint  such  commissioners,  and  shall  provide  that  the
  appointment  of  as  nearly as possible one-third of them shall be for a
  term of one year; one-third for a term of two years, and one-third for a
  term of three years; and that at the expiration of such terms, the terms
  of office of their successors shall be three years; so that the term  of
  office  of one-third of such commissioners, as nearly as possible, shall
  expire each year. All appointments to fill vacancies shall  be  for  the
  unexpired  term.  Not  more  than  one-third  of  the  members  of  said
  commission shall hold any other public office in said city  or  village.
  In  a  county containing a population of over three hundred thousand one
  of the members of any such commission may reside outside of such village
  or city as the case may be.