Lange Sign Group Custom Signage Solutions Lange Sign Group Davenport, Iowa Visit us today! 5569 Carey Ave Davenport, IA 52807 (563) 388-6650 dan@langesign.com Get To Know Us! Name Email Address City, State Message Number 10 + 14 = Submit Follow Ready for a Sign? Let’s get you seen! It only takes a few minutes to get started.