Whitehall. 1 City (1990 pop. 20,572), Franklin co., central Ohio, a suburb of Columbus; inc. 1948. Manufactures include water coolers and packaged meats. A large federal defense construction supply center is there. 2 Borough (1990 pop. 14,451), Allegheny co., SW Pa., a residential suburb of Pittsburgh; inc. 1948. Fabricated metal products and dairy goods are produced.