Sioux City, South Dakota Phone Lookup
Find the owner of any phone number in Sioux City, South Dakota.
What Phone Numbers Are in Sioux City, South Dakota?
Looking up a phone number in Sioux City, South Dakota? Enter any 10-digit phone number in the search box above to find the owner's name, address, and carrier information. Sioux City is served by 1 area code and has 10 active phone prefixes.
Area Codes Serving Sioux City
Phone numbers in Sioux City, South Dakota use the following area code: 605.
Top Phone Carriers in Sioux City
The most common phone service providers in Sioux City include:
- Onvoy, Llc - Sd
- Long Lines Metro, Llc - Sd
- T-mobile Usa, Inc.
- Qwest Corporation
- Telnyx Llc
Data current as of March 2026
Nearby Cities in South Dakota
Other cities in South Dakota that share area codes with Sioux City:
Frequently Asked Questions
What Area Codes Serve Sioux City, South Dakota?
Phone numbers in Sioux City, South Dakota use 1 area code: 605. These area codes are shared with other cities in the region. Sioux City has 10 active phone prefixes assigned to local carriers. If you received a call from one of these area codes, enter the full 10-digit number into the search box above to find out who called. The area code alone tells you the general geographic region, but a full reverse phone lookup on 411FCC reveals the specific owner, carrier, and line type associated with the number.
How Do I Look Up a Phone Number in Sioux City, South Dakota?
To look up any phone number in Sioux City, enter the full 10-digit number into the search box at the top of this page and click Search. 411FCC returns available information about the number including the registered owner's name, location, phone carrier, and whether it is a wireless cell phone, landline, or VoIP line. The lookup covers all 1 area code serving Sioux City and works for numbers from every carrier in the area. Results appear within seconds. 411FCC has maintained its phone number database since 2003.
What Types of Phone Numbers Are in Sioux City?
Sioux City, South Dakota has both wireless and landline phone numbers. Approximately 17% of phone prefixes in the area are classified as wireless (cell phone), with the remaining 83% being landline or VoIP. Major carriers serving the area include Onvoy, Llc - Sd, Long Lines Metro, Llc - Sd, T-mobile Usa, Inc.. When you search a phone number on 411FCC, the results identify the line type and carrier, which helps distinguish personal cell phones from business landlines and identify VoIP numbers commonly used by automated calling systems.