Hours Of Operations Master Lock Colorado Longmont Master Lock Hours of Operation and Locations in Longmont, CO 4.8 - 140 votes 1 Locations in Longmont masterlock.com Master Lock Hours Category: Home & Garden Master Lock - Longmont, CO 80501 2200 Mountain View Ave(303) 834-3157 View Store Details Explore LongmontView More Apparel MarshallsRoss Dress for LessBig LotsH & MCarhartt Sports TargetSports AuthorityBig 5 Sporting GoodsDick's Sporting GoodsVans Jewelry MarshallsHobby LobbyKohl's OutletKay JewelersAvon Recommend For You Mattress 1 One Mattress Discounters Mattress Giant Mattress Superstore Mattress Warehouse Maui Divers Jewelry McCoy's Building Supply Merle Norman Cosmetic Studio Miele Modern Bathroom