The origins of the Mercer Insurance Group began in 1844 when the Mercer County Mutual Fire Insurance Company was incorporated by the State of New Jersey after a group of Pennington, New Jersey merchants, farmers and homeowners met to form a company to provide affordable protection from fire. Mercer operated solely as a company providing protection from fire until 1959 when it changed its charter to engage in writing multiple lines, homeowners and general liability coverages and changed its name to the Mercer Mutual Insurance Company.
