▁Al leg hen y ▁County ▁ ▁B ound aries ▁in ▁ 1 9 0 3 ▁During ▁the ▁ 5 8 th ▁Congress , ▁the ▁district ▁served ▁Pitts burgh ▁W ards ▁ 1 - 1 9 ▁and ▁Ward ▁ 2 3 . ▁ ▁B ound aries ▁in ▁ 1 9 5 0 ▁During ▁the ▁ 8 1 st ▁Congress , ▁the ▁district ▁served ▁W ards ▁ 1 9 , ▁ 2 0 , ▁ 2 8 , ▁ 2 9 , ▁ 3 0 , ▁and ▁ 3 2 ▁in ▁Pitts burgh ▁and ▁the ▁following ▁port ions ▁of ▁Al leg hen y ▁County . ▁▁ ▁Bor ough s ▁served ▁by ▁the ▁ 3 1 st ▁District ▁ ▁Br ent wood ▁ ▁Bridge ville ▁ ▁Car neg ie ▁ ▁Castle ▁Sh annon ▁ ▁C ora opol is ▁ ▁C raft on ▁ ▁D orm ont ▁ ▁Green ▁Tree ▁ ▁Heidel berg ▁ ▁In gram ▁ ▁Mc Donald ( 5 th ▁election ▁district ) ▁ ▁Mc Ke es ▁Ro cks ▁ ▁Mount ▁Oliver ▁ ▁Oak dale ▁ ▁Ross lyn ▁Far ms ▁ ▁Th orn burg ▁ ▁Town ships ▁served ▁by ▁the ▁ 3 1 st ▁District ▁ ▁Bald win ▁ ▁Beth el ▁ ▁Col lier ▁ ▁C res cent ▁ ▁Find lay ▁ ▁Kennedy ▁ ▁Moon ▁ ▁Mount ▁Leb anon ▁ ▁Ne ville ▁ ▁North ▁F ay ette ▁ ▁Robinson ▁ ▁Scott ▁ ▁South ▁F ay ette ▁ ▁St owe ▁ ▁Upper ▁St . ▁Cla ir ▁ ▁Population ▁▁ 1 8 8 , 0 9 9