Hamburg is a city in Fremont County, Iowa, United States, that is the most southwestern city in Iowa, hugging the borders of Missouri to the south and Nebraska to the west. It is situated between the Nishnabotna and Missouri rivers. The population was 890 at the time of the 2020 census. It derives its name from the German city of Hamburg.
The community on June 16, 2011 during the 2011 Missouri River floods after a levee protecting it was breached. A second levee was built and held
An aerial view of the breach at levee L-575 near Hamburg, which occurred June 13, 2011 and increased to nearly 300 feet in size.
Fremont County is a county located in the U.S. state of Iowa. As of the 2020 census the population was 6,605, making it the state's seventh-least populous county. The county seat is Sidney. The county was formed in 1847 and named for the military officer John C. Frémont.
Fremont County Courthouse