Waterloo, Ohio
Waterloo is an unincorporated community in southeastern Symmes Township, Lawrence County, Ohio, United States, along Symmes Creek. Although it is unincorporated, it has a post office, with the ZIP code of 45688. Waterloo, Ohio is also noteworthy for having produced the Waterloo Wonders, who carried Ohio's Class B championship in basketball for both 1934 and 1935.
