<page_title> List of counties in Indiana </page_title> <section_title> List of counties </section_title> <table> <cell> Marion County <col_header> County </col_header> <col_header> Adams County </col_header> <col_header> Allen County </col_header> <col_header> Bartholomew County </col_header> <col_header> Benton County </col_header> <col_header> Blackford County </col_header> <col_header> Boone County </col_header> <col_header> Brown County </col_header> <col_header> Carroll County </col_header> <col_header> Cass County </col_header> <col_header> Clark County </col_header> <col_header> Clay County </col_header> <col_header> Clinton County </col_header> <col_header> Crawford County </col_header> <col_header> Daviess County </col_header> <col_header> Dearborn County </col_header> <col_header> Decatur County </col_header> <col_header> DeKalb County </col_header> <col_header> Delaware County </col_header> <col_header> Dubois County </col_header> <col_header> Elkhart County </col_header> <col_header> Fayette County </col_header> <col_header> Floyd County </col_header> <col_header> Fountain County </col_header> <col_header> Franklin County </col_header> <col_header> Fulton County </col_header> <col_header> Gibson County </col_header> <col_header> Grant County </col_header> <col_header> Greene County </col_header> <col_header> Hamilton County </col_header> <col_header> Hancock County </col_header> <col_header> Harrison County </col_header> <col_header> Hendricks County </col_header> <col_header> Henry County </col_header> <col_header> Howard County </col_header> <col_header> Huntington County </col_header> <col_header> Jackson County </col_header> <col_header> Jasper County </col_header> <col_header> Jay County </col_header> <col_header> Jefferson County </col_header> <col_header> Jennings County </col_header> <col_header> Johnson County </col_header> <col_header> Knox County </col_header> <col_header> Kosciusko County </col_header> <col_header> LaGrange County </col_header> <col_header> Lake County </col_header> <col_header> LaPorte County </col_header> <col_header> Lawrence County </col_header> <col_header> Madison County </col_header> </cell> <cell> 903,393 <col_header> Population </col_header> <row_header> Marion County </row_header> </cell> <cell> Ohio County <col_header> County </col_header> <col_header> Adams County </col_header> <col_header> Allen County </col_header> <col_header> Bartholomew County </col_header> <col_header> Benton County </col_header> <col_header> Blackford County </col_header> <col_header> Boone County </col_header> <col_header> Brown County </col_header> <col_header> Carroll County </col_header> <col_header> Cass County </col_header> <col_header> Clark County </col_header> <col_header> Clay County </col_header> <col_header> Clinton County </col_header> <col_header> Crawford County </col_header> <col_header> Daviess County </col_header> <col_header> Dearborn County </col_header> <col_header> Decatur County </col_header> <col_header> DeKalb County </col_header> <col_header> Delaware County </col_header> <col_header> Dubois County </col_header> <col_header> Elkhart County </col_header> <col_header> Fayette County </col_header> <col_header> Floyd County </col_header> <col_header> Fountain County </col_header> <col_header> Franklin County </col_header> <col_header> Fulton County </col_header> <col_header> Gibson County </col_header> <col_header> Grant County </col_header> <col_header> Greene County </col_header> <col_header> Hamilton County </col_header> <col_header> Hancock County </col_header> <col_header> Harrison County </col_header> <col_header> Hendricks County </col_header> <col_header> Henry County </col_header> <col_header> Howard County </col_header> <col_header> Huntington County </col_header> <col_header> Jackson County </col_header> <col_header> Jasper County </col_header> <col_header> Jay County </col_header> <col_header> Jefferson County </col_header> <col_header> Jennings County </col_header> <col_header> Johnson County </col_header> <col_header> Knox County </col_header> <col_header> Kosciusko County </col_header> <col_header> LaGrange County </col_header> <col_header> Lake County </col_header> <col_header> LaPorte County </col_header> <col_header> Lawrence County </col_header> <col_header> Madison County </col_header> <col_header> Marion County </col_header> <col_header> Marshall County </col_header> <col_header> Martin County </col_header> <col_header> Miami County </col_header> <col_header> Monroe County </col_header> <col_header> Montgomery County </col_header> <col_header> Morgan County </col_header> <col_header> Newton County </col_header> <col_header> Noble County </col_header> </cell> <cell> 6,128 <col_header> Population </col_header> <row_header> Ohio County </row_header> </cell> </table>
Marion County is the most populous (903,393) and Ohio County (6,128) the least.