6 0 ) ▁versus ▁$ 4 0 , 7 8 1 ▁(+ / − ▁$ 8 , 2 4 1 ) ▁for ▁females . ▁The ▁per ▁cap ita ▁income ▁for ▁the ▁bor ough ▁was ▁$ 3 1 , 0 7 4 ▁(+ / − ▁$ 3 , 5 7 6 ). ▁About ▁ 3 . 4 % ▁of ▁families ▁and ▁ 8 . 7 % ▁of ▁the ▁population ▁were ▁below ▁the ▁pover ty ▁line , ▁including ▁ 6 . 0 % ▁of ▁those ▁under ▁age ▁ 1 8 ▁and ▁ 8 . 5 % ▁of ▁those ▁age ▁ 6 5 ▁or ▁over . ▁ ▁Census ▁ 2 0 0 0 ▁As ▁of ▁the ▁ 2 0 0 0 ▁United ▁States ▁Census ▁there ▁were ▁ 3 , 1 3 6 ▁people , ▁ 1 , 3 0 4 ▁households , ▁and ▁ 8 3 9 ▁families ▁res iding ▁in ▁the ▁bor ough . ▁The ▁population ▁density ▁was ▁ 1 , 9 7 5 . 6 ▁people ▁per ▁square ▁mile ▁( 7 6 1 . 5 / km 2 ). ▁There ▁were ▁ 1 , 3 8 9 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁ 8 7 5 . 0 ▁per ▁square ▁mile ▁( 3 3 7 . 3 / km 2 ). ▁The ▁ra cial ▁make up ▁of ▁the ▁bor ough ▁was ▁ 8 5 . 0 4 % ▁White , ▁ 1 2 . 9 1 % ▁African ▁American , ▁ 0 . 1 9 % ▁Native ▁American , ▁ 0 .