Key-Ads Outdoor Advertising Share: Advertising/Marketing/PR Key-Ads Outdoor Advertising Visit Website 50 East Third Street Dayton, OH 45402 (937) 279-0465 About Map About Key-Ads is a family owned and operated outdoor advertising company. We are a third generation company based in Dayton, OH. We have billboards and Digital Gateways located throughout Western Ohio. What's Nearby? Distance: 5 10 15 20 25 50 mi.