ZIP code · Little Sioux · Iowa · United States
ZIP code 51545 — Little Sioux
ZIP code 51545 serves Little Sioux, Iowa.
- Postal code
- 51545Single source Value from one source, not cross-checked.
- City
- Little Sioux
- County
- Harrison
- State
- Iowa
- Country
- United States
- Coordinates
- 41.8083, -96.0314 — precision precise (locality)
View on OpenStreetMap - Population
- 258 (ZCTA, ACS 5-year)
- Median household income
- $67,083
- Median age
- 58.9
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · census-acs5. Data generated on 2026-08-21. Methodology · Report an error on this page