Hours Of Operations ADT Texas San Marcos ADT Hours of Operation and Locations in San Marcos, TX 4.7 - 140 votes 1 Locations in San Marcos www.adt.com ADT Hours Category: Home & Garden ADT - San Marcos, TX 78666 730 E Hopkins St(512) 271-6864 View Store Details Explore San MarcosView More Apparel Sam's ClubMarshallsRoss Dress for LessColdwater CreekCato Sports TargetNew BalanceNikeSkechersReebok Jewelry Sam's ClubMarshallsHobby LobbyCatoSaks Fifth Avenue Recommend For You Stacy Furniture Build-A Bear Workshop J. C. Penney 84 Lumber A.C. Moore Arts & Crafts Adams Golf American Standard American TV & Appliance Andersen Windows & Doors Andronico's Market