About 51545 - Little Sioux, Iowa
The ZIP code 51545 of Little Sioux falls within Iowa, the United States - a mid-sized area by population. It sits within Little Sioux County.
Census data puts the population of this ZIP code at 25,347 residents. That's close to the typical population for a ZIP code in Iowa (~22,608).
Median household income is about $72,300 (near the Iowa average).
This ZIP code sits alongside neighboring areas like Montour, Cresco, Davenport within Iowa.