McMahon Agency Inc. Insurance & Financial Services Insurance McMahon Agency Inc. Insurance & Financial Services Visit Website 2131 Asbury Avenue Ocean City, NJ 08226 (609) 967-7584 800-448-6340 609-399-9178 (fax) Facebook About About The McMahon Agency is a family owned & operated Trusted Choice Iindependant Insurance Agency serving the insurance needs of South Jersey since 1921with offices in Ocean City, Marmora, & Mays Landing!