▁ 2 0 0 8 , ▁Lyon ▁County ▁was ▁one ▁of ▁the ▁fast est - g row ing ▁count ies ▁in ▁the ▁United ▁States . ▁However , ▁its ▁growth ▁rate ▁col lapsed ▁during ▁ 2 0 0 8 . ▁▁ 2 0 1 0 ▁census ▁As ▁of ▁the ▁ 2 0 1 0 ▁United ▁States ▁Census , ▁there ▁were ▁ 5 1 , 9 8 0 ▁people , ▁ 1 9 , 8 0 8 ▁households , ▁and ▁ 1 4 , 1 3 7 ▁families ▁living ▁in ▁the ▁county . ▁The ▁population ▁density ▁was ▁. ▁There ▁were ▁ 2 2 , 5 4 7 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁. ▁The ▁ra cial ▁make up ▁of ▁the ▁county ▁was ▁ 8 5 . 0 % ▁white , ▁ 2 . 5 % ▁American ▁Indian , ▁ 1 . 4 % ▁Asian , ▁ 0 . 8 % ▁black ▁or ▁African ▁American , ▁ 0 . 3 % ▁Pacific ▁island er , ▁ 6 . 4 % ▁from ▁other ▁races , ▁and ▁ 3 . 7 % ▁from ▁two ▁or ▁more ▁races . ▁Those ▁of ▁His pan ic ▁or ▁Lat ino ▁origin ▁made ▁up ▁ 1 4 . 8 % ▁of ▁the ▁population . ▁In ▁terms ▁of ▁ancest ry , ▁ 2 0 . 0 % ▁were ▁German , ▁ 1 8 . 5 % ▁were ▁English , ▁ 1 5 . 5 % ▁were ▁Irish , ▁ 5 . 9 % ▁were ▁Italian , ▁and ▁ 5 . 3 %