AT Matthews & Dier

About Us

Covering approximately 4 counties in northern and central New York, A.T. Matthews and Dier is an independent insurance agency specializing in property and casualty insurance for both individuals and businesses.

We currently operate 2 agencies in Jefferson County under the approved trade names of A. T. Matthews and Dier, located in Watertown, NY, and Timerman Adams Agency in Chaumont, NY.

A.T. Matthews and Dier, a 3rd-generation, family owned business, provides a higher level of service than the competition. We offer over 30 years of experience and more than 100 years of combined experience.