51640 Frequently Asked Questions

A: ZIP Code 51640 is Located in Hamburg Iowa. Portions of 51640 are also in Washington Township (Fremont County), Madison Township (Fremont County), Locust Grove Township (Fremont County), Sidney Township.

A: ZIP Code 51640 is Located Entirely in Fremont County Iowa.

A: The Current Sales Tax in ZIP Code 51640 is 5.5%

A: The Area Code for 51640 is 712.

A: ZIP Code 51640 is in the Iowa 4th Congressional District.

A: ZIP Code 51640 is in Iowa State House of Representatives District 16.

A: ZIP Code 51640 is in Iowa State Senate District 8.

A: The 2022 population of ZIP Code 51640 is 1503. The population growth rate in 51640 is 0.00%. The population density of 51640 is 16.

A: The majority race/ethnicity of people residing in 51640 is White (97.61%). The majority race/ethnicity of students attending public schools in 51640 is White(90.37%).

A: The median household income in 51640 is $53,571 (2021) and the average adjusted income is $498,730 (2021).