Hours Of Operations ADT Maryland New Market ADT Hours of Operation and Locations in New Market, MD 4.7 - 140 votes 2 Locations in New Market www.adt.com ADT Hours Category: Home & Garden ADT - New Market, MD 21774 (301) 882-0156 View Store Details ADT - New Market, MD 21774 (301) 882-0155 View Store Details Explore New MarketView More Apparel RainbowCoach 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