9 9 ▁at ▁the ▁ 2 0 1 0 ▁census . ▁ ▁History ▁The ▁Ada irs ▁Cover ed ▁Bridge ▁and ▁B ist line ▁Cover ed ▁Bridge ▁are ▁listed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places . ▁ ▁Geography ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁town ship ▁has ▁a ▁total ▁area ▁of ▁ 2 7 . 6   square ▁miles ▁( 7 1 . 4   km ² ), ▁of ▁which , ▁ 2 7 . 5   square   m iles ▁( 7 1 . 4   km ² ) ▁of ▁it ▁is ▁land ▁and ▁ 0 . 0 4 % ▁is ▁water . ▁ ▁Dem ograph ics ▁ ▁As ▁of ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁were ▁ 8 5 6 ▁people , ▁ 2 9 2 ▁households , ▁and ▁ 2 2 6 ▁families ▁res iding ▁in ▁the ▁town ship . ▁ ▁The ▁population ▁density ▁was ▁ 3 1 . 1 ▁people ▁per ▁square ▁mile ▁( 1 2 . 0 / km ²). ▁ ▁There ▁were ▁ 3 9 5 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁ 1 4 . 3 / sq   mi ▁( 5 . 5 / km ²). ▁ ▁The ▁ra cial ▁make up ▁of ▁the ▁town ship ▁was ▁ 9 9 . 8 8 % ▁White , ▁and ▁ 0 . 1 2 % ▁from ▁two ▁or ▁more ▁races . ▁ ▁There ▁were ▁ 2 9 2 ▁households ▁out ▁of ▁which ▁ 3 4 . 2 % ▁had