, ▁then ▁by ▁Ch est nut ▁Avenue ▁and ▁High ▁Bridge ▁Road , ▁then ▁again ▁by ▁the ▁boundary ▁of ▁B owie . ▁The ▁southern ▁boundary ▁of ▁Gl enn ▁D ale ▁is ▁formed ▁by ▁Ann apolis ▁Road ▁( M ary land ▁Route ▁ 4 5 0 ), ▁and ▁the ▁western ▁boundary ▁follows ▁the ▁stream ▁called ▁Fol ly ▁Branch , ▁then ▁Lan ham - S ever n ▁Road ▁( M ary land ▁Route ▁ 5 6 4 ), ▁then ▁Green b elt ▁Road ▁( Route ▁ 1 9 3 ), ▁returning ▁to ▁Good ▁L uck ▁Road . ▁ ▁Dem ograph ics ▁ ▁As ▁of ▁the ▁census ▁of ▁ 2 0 0 0 , ▁there ▁were ▁ 1 2 , 6 0 9 ▁people , ▁ 4 , 0 8 6 ▁households , ▁and ▁ 3 , 3 0 5 ▁families ▁res iding ▁in ▁the ▁CD P . ▁The ▁population ▁density ▁was ▁ 1 , 7 1 0 . 0 ▁people ▁per ▁square ▁mile ▁( 6 6 0 . 6 / km ²). ▁There ▁were ▁ 4 , 1 6 5 ▁housing ▁units ▁at ▁an ▁average ▁density ▁of ▁ 5 6 4 . 9 / sq   mi ▁( 2 1 8 . 2 / km ²). ▁The ▁ra cial ▁make up ▁of ▁the ▁CD P ▁was ▁ 4 0 . 3 8 % ▁White , ▁ 4 8 . 0 9 % ▁African ▁American , ▁ 0 . 2 5 % ▁Native ▁American , ▁ 7 . 8 0 % ▁Asian , ▁ 0 . 0