Welcome to Ontario Insurance Company Ontario Insurance Company is a Non-Assessable, Advanced Premium Cooperative Insurance Company. The Company has been rated A (excellent) by AM Best Company with a Financial Size Category (FSC) of V. It is situated in the picturesque Finger Lakes Region of Upstate New York just south of the New York State Thruway Exit 43 on Route 21 in Shortsville, New York. The staff at Ontario Insurance Company is familiar with the needs of local insurance agents and policyholders and maintains a friendly, personal relationship with all agencies that represent the Company. Employees are highly trained and motivated individuals who have a willingness to help agents and their policyholders using their insurance knowledge and fair underwriting practices. They provide prompt, reliable and consistent support to the agent while offering high quality products and service to its policyholders.