<page_title> List of cities proper by population </page_title> <section_title> Cities proper by population </section_title> <table> <cell> 4 <col_header> Rank </col_header> </cell> <cell> Istanbul <col_header> City </col_header> </cell> <cell> 15,029,231 <col_header> Population </col_header> </cell> <cell> Metropolitan municipality <col_header> Definition </col_header> </cell> </table>
With a total population of around 15 million residents in its metropolitan area, Istanbul ranks as the fourth largest city.