Martelle, IA

ZIP code 52305 belongs to Anamosa, Iowa. This area is home to the Anamosa State Penitentiary, one of the oldest correctional facilities in the state. The prison is a significant landmark in the town and has historical importance. Anamosa is also known for the National Motorcycle Museum, which showcases a vast collection of vintage bikes and memorabilia, attracting motorcycling enthusiasts from all over.