Martelle, IA

ZIP code 52305 covers the area of Anamosa, Iowa. This small town is known for being the home of the Anamosa State Penitentiary, a historic prison that dates back to the 19th century. Another important landmark in the area is the Wapsipinicon State Park, offering outdoor recreational activities such as hiking, camping, and picnicking along the Wapsipinicon River.