AT&T - Longmont Harvest Junction Store Share: Wireless Communications AT&T - Longmont Harvest Junction Store Request Info 180 Ken Pratt Blvd B225 Longmont, CO 80501 303-776-0451 About Map About Premium integrated products that are better together with more simplicity and value. The best choice for video, internet and wireless – even more with unlimited plans and premium entertainment. What's Nearby? Distance: 5 10 15 20 25 50 mi.