Norwalk is a city in Warren County, with some small portions extending into Polk County, in the U.S. state of Iowa. The population was 8,945 at the 2010 census. The city is part of the Des Moines–West Des Moines Metropolitan Statistical Area and is located just south of the Des Moines International Airport.
The first settlers came to Norwalk area about 1846. One of them, Samuel Crow, settled near the North River. The first construction on the site that is now Norwalk began with a log cabin built by Samuel Snyder. The following year more families settled in the little town known as Pyra. A post office was established in the town on June 18, 1856. George W. Swan laid out the town and erected a hotel. Mr.