With 17 branch locations Croghan Colonial Bank is proud to serve consumers and business in the communities of Erie, Huron, Lucas, Ottawa, Sandusky and Seneca counties. Regardless of location, it can serve customers across the country through the variety of digital banking products. Croghan Bancshares is the parent holding company of Croghan Colonial Bank, an Ohio state-chartered bank, locally owned and operated since 1888.