51109 Frequently Asked Questions

A: ZIP Code 51109 is Located in Sioux City Iowa. Portions of 51109 are also in Hancock Township, Perry Township (Plymouth County), Jefferson Township (Union County).

A: ZIP Code 51109 is Located Primarily in Plymouth County Iowa with Portions in Woodbury County and Union County.

A: The Current Sales Tax in ZIP Code 51109 is 7.0%

A: The Area Code for 51109 is 712.

A: ZIP Code 51109 is in the Iowa 4th Congressional District.

A: 51109 is within Iowa State House of Representatives District 1, Iowa State House of Representatives District 13 and Iowa State House of Representatives District 17.

A: 51109 is within Iowa State Senate District 1, Iowa State Senate District 7 and Iowa State Senate District 17.

A: The 2022 population of ZIP Code 51109 is 3619. The population growth rate in 51109 is 14.07%. The population density of 51109 is 192.

A: The majority race/ethnicity of people residing in 51109 is White (84.16%). The majority race/ethnicity of students attending public schools in 51109 is White(60.54%).

A: The median household income in 51109 is $61,786 (2021) and the average adjusted income is $155,740 (2021).