Welcome to Cornerstone Insurance Associates Inc. At Cornerstone Insurance Associates Inc., we are proud to be an independent, family-owned insurance agency serving Williamsport, South Williamsport, and the surrounding Pennsylvania, New York, and New Jersey for over 35 years. Our mission is simple: to protect the people and businesses that make our community strong. As a top-ranked Erie Insurance agency, we combine the strength of national carriers with the personalized service of a local agency you can trust. Why Choose Cornerstone Insurance? - Personal Insurance – Auto, Home, Renters, Motorcycle, RV, Umbrella, and more. - Business Insurance – Liability, Property, Commercial Auto, Workers’ Compensation, and tailored coverage for local businesses. - Life & Health Insurance – Life, Annuities, Medicare Supplements, and health options to protect your family’s future. - Local Expertise – We know Central Pennsylvania, Williamsport, and surrounding towns — from neighborhoods to businesses — and we’re committed to providing solutions that fit your needs. - Top Service – Dozens of 5-star Google reviews highlight our team’s prompt, friendly, and knowledgeable service. Our Promise to You - We provide honest advice to help you choose coverage that’s right for you. - We deliver responsive, local service when you need it most — whether it’s a claim, a policy change, or a simple question.