Le Mars, IA

ZIP code 51031 covers the town of Fremont, Iowa. Located in Mahaska County, this area is known for its charming small-town atmosphere and beautiful natural surroundings. One of the most important landmarks in ZIP code 51031 is Lake Red Rock, a popular spot for outdoor recreation including boating and fishing. Additionally, the town is home to the Fremont Mill, a historic building that dates back to the mid-1800s.