51040 Frequently Asked Questions

A: ZIP Code 51040 is Located in Onawa Iowa. Portions of 51040 are also in Turin, Ashton Township, Belvidere Township, Lincoln Township (Monona County), Franklin Township (Monona County), Sioux Township (Monona County), Kennebec Township, Quinnebaugh Township.

A: ZIP Code 51040 is Located Entirely in Monona County Iowa.

A: The Current Sales Tax in ZIP Code 51040 is 7.0%

A: The Area Code for 51040 is 712.

A: 51040 is within by the Iowa 4th Congressional District and the Iowa 3rd Congressional District.

A: ZIP Code 51040 is in Iowa State House of Representatives District 13.

A: 51040 is within Iowa State Senate District 7 and Iowa State Senate District 16.

A: The 2022 population of ZIP Code 51040 is 3422. The population growth rate in 51040 is 0.00%. The population density of 51040 is 19.

A: The majority race/ethnicity of people residing in 51040 is White (96.50%). The majority race/ethnicity of students attending public schools in 51040 is White(83.54%).

A: The median household income in 51040 is $51,036 (2021) and the average adjusted income is $374,420 (2021).