. ▁Historic ▁churches ▁in ▁Union ▁include ▁the ▁Old ▁Bapt ist ▁Church ▁( 1 8 4 5 ), ▁Old ▁Method ist ▁Epis cop al ▁Church / A mes ▁Cla ir ▁Hall ▁( 1 8 5 7 ), ▁All ▁Sain ts ▁Epis cop al ▁Church ▁( 1 8 7 5 ), ▁Union ▁United ▁Method ist ▁Church ▁( 1 8 8 9 ), ▁and ▁the ▁Union ▁Pres by ter ian ▁Church ▁( 1 9 2 2 ). ▁The ▁Mon roe ▁County ▁Historical ▁Society ▁pres erves ▁several ▁historic ▁structures ▁in ▁the ▁town , ▁including ▁the ▁Cap erton ▁Law ▁Office , ▁O wen ▁Ne el ▁House , ▁Clark - W is emen ▁House , ▁Am es ▁Cla ir ▁Hall , ▁and ▁the ▁Old ▁Bapt ist ▁Church . ▁In ▁recognition ▁of ▁the ▁history ▁of ▁Union ▁and ▁the ▁integrity ▁of ▁its ▁preserved ▁streets cape , ▁the ▁Union ▁Historic ▁District ▁was ▁placed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁ 1 9 9 0 . ▁▁ ▁East ▁of ▁Union ▁is ▁Re h ob oth ▁Church , ▁built ▁in ▁ 1 7 8 4 ▁and ▁believed ▁to ▁be ▁the ▁oldest ▁Protest ant ▁church ▁west ▁of ▁the ▁Al leg hen y ▁Mountains . ▁ ▁Geography ▁Union ▁is ▁located ▁at ▁ ▁( 3 7 . 5 9 1 2 1 1 , ▁- 8 0 . 5 4 3 0 2 2 ). ▁ ▁According ▁to ▁the ▁United ▁States ▁Census ▁Bureau , ▁the ▁town ▁has ▁a ▁total ▁area ▁of ▁, ▁all ▁of ▁it ▁land . ▁ ▁Dem ograph ics ▁▁ 2 0 1