Franklin. 1 City (1990 pop. 12,907), seat of Johnson co., S central Ind., inc. 1823. It is a farm trade center. Manufactures include auto parts, aluminum doors and windows, and copper panels. Franklin College of Indiana is there. 2 City (1990 pop. 11,026), Warren co., SW Ohio, on the Great Miami River, in a farm area; inc. 1813. Paper products are manufactured in the city, which was a flourishing river port in the mid-19th cent. 3 City (1990 pop. 21,855), Milwaukee co., W central Wis., a residential suburb of Milwaukee; inc. 1956.