51003 Frequently Asked Questions

A: ZIP Code 51003 is Located in Alton Iowa. Portions of 51003 are also in Orange City, Nassau Township, Holland Township, Floyd Township (Sioux County), East Orange Township.

A: ZIP Code 51003 is Located Entirely in Sioux County Iowa.

A: The Current Sales Tax in ZIP Code 51003 is 7.0%

A: The Area Code for 51003 is 712.

A: ZIP Code 51003 is in the Iowa 4th Congressional District.

A: ZIP Code 51003 is in Iowa State House of Representatives District 3.

A: ZIP Code 51003 is in Iowa State Senate District 2.

A: The 2022 population of ZIP Code 51003 is 1761. The population growth rate in 51003 is -1.65%.

A: The majority race/ethnicity of people residing in 51003 is White (91.30%). The majority race/ethnicity of students attending public schools in 51003 is White(74.37%).

A: The median household income in 51003 is $88,487 (2021) and the average adjusted income is $412,430 (2021).