s ▁Category : C zech ▁philosoph ers ▁Category : C zech ▁law y ers ▁Category : Const itution al ▁Court ▁of ▁the ▁Czech ▁Republic ▁jud ges ▁Category : C zech ▁jur ists ▁Category : Pol it ical ▁science ▁writers <0x0A> </s> ▁Washington ▁Township ▁is ▁a ▁town ship ▁in ▁Indiana ▁County , ▁Pennsylvania , ▁United ▁States . ▁The ▁population ▁was ▁ 1 , 8 0 8 ▁at ▁the ▁ 2 0 1 0 ▁census . ▁The ▁town ship ▁includes ▁the ▁communities ▁of ▁Adv ance , ▁Davis , ▁Five ▁Point s , ▁and ▁Wil let ▁( pre viously ▁called ▁Mar lin ' s ▁Mill ). ▁It ▁surr ounds ▁but ▁does ▁not ▁include ▁the ▁bor ough ▁of ▁C ree ks ide . ▁ ▁History ▁The ▁Harm on ' s ▁Cover ed ▁Bridge ▁and ▁Tr us al ▁Cover ed ▁Bridge ▁were ▁listed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁ 1 9 7 9 . ▁ ▁Geography ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁town ship ▁has ▁a ▁total ▁area ▁of ▁ 3 8 . 3   square ▁miles ▁( 9 9 . 1   km 2 ), ▁all ▁of ▁it ▁land . ▁ ▁Dem ograph ics ▁ ▁As ▁of ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁were ▁ 1 , 8 0 5 ▁people , ▁ 6 6 1 ▁households , ▁and ▁ 5 2 4 ▁families ▁res iding ▁in ▁the ▁town ship . ▁ ▁The ▁population ▁density ▁was ▁ 4 7 . 2 ▁people ▁per ▁square ▁mile ▁( 1