▁promotion ▁of ▁ge ot our ism . ▁ ▁Population ▁▁ ▁As ▁of ▁March ▁ 3 1 , ▁ 2 0 1 7 , ▁the ▁city ▁has ▁an ▁estimated ▁population ▁of ▁ 1 4 , 0 0 6 , ▁with ▁ 7 , 6 2 2 ▁households ▁and ▁a ▁population ▁density ▁of ▁ 5 6 ▁persons ▁per ▁km 2 . ▁The ▁total ▁area ▁is ▁ 2 4 8 . 2 5   km 2 . ▁ ▁Ge ology ▁The ▁pen ins ula ▁is ▁made ▁up ▁of ▁O lig oc ene ▁to ▁Ple ist oc ene - aged ▁sed iment ary ▁rocks ▁and ▁loose ▁Hol oc ene - aged ▁all uv ial ▁depos its . ▁The ▁rocks ▁belong ▁to ▁the ▁Sh im anto ▁Super group , ▁represented ▁in ▁the ▁pen ins ula ▁as ▁mud stone , ▁and ▁the ▁Ton oh ama ▁Group ▁made ▁up ▁of ▁chief ly ▁of ▁sand stone ▁and ▁gra vel . ▁Several ▁active , ▁W N W - di pping , ▁thrust ▁fault s ▁are ▁exposed ▁at ▁the ▁western ▁coast ▁and ▁southern ▁tip ▁of ▁the ▁pen ins ula . ▁Off - sh ore ▁west ▁of ▁the ▁Cape ▁M uro to , ▁tip ▁of ▁the ▁pen ins ula , ▁there ▁fault s ▁di ps ▁to ▁the ▁west . ▁▁ ▁There ▁are ▁u pl ift ed ▁marine ▁terra ces ▁at ▁M uro to . ▁D ating ▁of ▁these ▁terra ces ▁reve al ▁that ▁since ▁their ▁formation ▁in ▁an ▁interval ▁ 1 2 3 ▁to ▁ 9 6 ▁thousand ▁years ▁ago ▁( k ▁B .