▁many ▁Chinese ▁lived ▁there . ▁ ▁Washington ' s ▁biggest ▁business es ▁are ▁its ▁two ▁cam ps ites , ▁Gene ' s ▁P ine ▁A ire ▁Camp ground ▁and ▁the ▁River ▁Rest , ▁which ▁has ▁been ▁in ▁business ▁since ▁the ▁ 1 9 6 0 s ▁through ▁different ▁own ers . ▁tog host . com ▁S ara ▁Ross - Sam ko ] ▁is ▁making ▁a ▁feature - length ▁document ary ▁portrait ▁of ▁the ▁town . ▁ ▁The ▁Z IP ▁Code ▁is ▁ 9 5 9 8 6 . ▁The ▁community ▁is ▁inside ▁area ▁code ▁ 5 3 0 . ▁ ▁History ▁The ▁place ▁was ▁founded ▁in ▁ 1 8 4 9 ▁by ▁min ers ▁from ▁Indiana , ▁and ▁was ▁originally ▁named ▁Indiana ▁Camp . ▁It ▁was ▁renamed ▁Washington ▁in ▁ 1 8 5 0 . ▁ ▁The ▁Washington ▁South ▁Y uba ▁post ▁office ▁operated ▁here ▁from ▁ 1 8 5 2 ▁to ▁ 1 8 5 4 . ▁The ▁Washington ▁post ▁office ▁opened ▁in ▁ 1 8 6 2 . ▁ ▁Geography ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁CD P ▁covers ▁an ▁area ▁of ▁, ▁all ▁of ▁it ▁land . ▁ ▁Dem ograph ics ▁The ▁ 2 0 1 0 ▁United ▁States ▁Census ▁reported ▁that ▁Washington ▁had ▁a ▁population ▁of ▁ 1 8 5 . ▁The ▁population ▁density ▁was ▁ 9 7 . 4 ▁people ▁per ▁square ▁mile ▁( 3 7 . 6 / km ²). ▁The ▁ra cial ▁make up ▁of ▁Washington ▁was ▁ 1 6 6 ▁( 8