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.

The first settlers in the community were people who actually thought they were settling in Missouri following the Platte Purchase of former Indian territory there across the state line opened up settlement.

[4] The brothers were also involved in another border irregularity when they bought McKissick Island a mile south of Hamburg.

They thought at the time the island in the Missouri River was attached to Nebraska territory.

The river changed course in 1867 resulting in the island becoming physically attached by dry land to Missouri and cut off from Nebraska by the main channel.

In the meantime students from the Nebraska island passed through Missouri en route to being educated in Hamburg in Iowa.

))[6] who named for the German city and was formally incorporated on April 1, 1867 at about the same time as it was reached by the Council Bluffs and St. Joseph Railroad.

The company grew to the point where he bought the city's old water tower and train station to store his popcorn - the two structures hold a million pounds of popcorn.

Vogel Popcorn is now owned by ConAgra Foods but remains headquartered in the city.

[7] The city gets considerable publicity during periods of Missouri River flooding, including most recently the 2019 Midwestern U.S. floods, which left the city without sewage, water or gas.

In 2012, residents sought to raise funds for repairs to the city's flood control levee with a flash mob dance video of "Proud Mary," but did not receive the $5 million needed.

[8][9][10][11] According to the United States Census Bureau, the city has a total area of 1.10 square miles (2.85 km2), all land.

33.3% of all households were made up of individuals, and 16.5% had someone living alone who was 65 years of age or older.

32.4% of all households were made up of individuals, and 18.4% had someone living alone who was 65 years of age or older.