Sioux County, Iowa
Sioux County is a county in Iowa. Its county FIPS code is 19167. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 19167
- Representative coordinates
- 43.082618, -96.177980
- County type
- County
- County seat or government
- Orange City
- Resident population, July 2025
- 36,774
- Land area
- 1,988.881 km²
- Water area
- 2.802 km²
- State
- Iowa
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Sioux County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
51003 · 51011 · 51022 · 51023 · 51027 · 51031 · 51036 · 51041 · 51050 · 51201 · 51234 · 51235 · 51238 · 51239 · 51240 · 51244 · 51247 · 51250 · 57034
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Sioux County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
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