and , ▁and ▁has ▁many ▁trib ut aries ▁flow ing ▁into ▁the ▁Des ▁Mo ines ▁River . ▁The ▁Des ▁Mo ines ▁was ▁large ▁enough ▁to ▁handle ▁steam bo at ▁traffic ▁in ▁the ▁ 1 8 0 0 s ▁and ▁was ▁the ▁reason ▁that ▁Ke os au qua ▁was ▁founded . ▁ ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁city ▁has ▁a ▁total ▁area ▁of ▁, ▁of ▁which ▁ ▁is ▁land ▁and ▁ ▁is ▁water . ▁ ▁Dem ograph ics ▁▁ 2 0 1 0 ▁census ▁As ▁of ▁the ▁census ▁of ▁ 2 0 1 0 , ▁there ▁were ▁ 1 , 0 0 6 ▁people , ▁ 4 5 9 ▁households , ▁and ▁ 2 5 1 ▁families ▁res iding ▁in ▁the ▁city . ▁The ▁population ▁density ▁was ▁. ▁There ▁were ▁ 5 1 5 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁. ▁The ▁ra cial ▁make up ▁of ▁the ▁city ▁was ▁ 9 7 . 6 % ▁White , ▁ 0 . 4 % ▁African ▁American , ▁ 0 . 9 % ▁Asian , ▁ 0 . 1 % ▁from ▁other ▁races , ▁and ▁ 1 . 0 % ▁from ▁two ▁or ▁more ▁races . ▁His pan ic ▁or ▁Lat ino ▁of ▁any ▁race ▁were ▁ 1 . 1 % ▁of ▁the ▁population . ▁ ▁There ▁were ▁ 4 5 9 ▁households ▁of ▁which ▁ 2 0 . 7 % ▁had ▁children ▁under ▁the ▁age ▁of ▁ 1 8 ▁living ▁with ▁them , ▁ 4 3 . 1 % ▁were