DELPHOS, a city of western Ohio, U.S.A., in Allen and Van Wert counties, 7om. S.W. of Toledo. It is on the Lincoln highway, and is served by the Nickel Plate, the Northern Ohio and the Pennsylvania railways. The population was 5,745 in 1920; 193o it was 5,672. The city has railroad shops, a galvanizing plant and other manufacturing industries.