Martelle, IA

ZIP code 52305 encompasses the town of Anamosa, Iowa. This small, historic town is home to the Anamosa State Penitentiary, a renowned maximum-security prison. Additionally, Anamosa boasts the Wapsipinicon State Park, a beautiful natural area along the Wapsipinicon River, popular for outdoor activities such as camping, hiking, and fishing. The area offers a blend of historical significance and natural beauty for residents and visitors to enjoy.