Iowa · Checked Against SSA's Locator October 1, 2026

Social Security Office in Sioux City, IA

Where Is the Social Security Office in Sioux City, IA?

The Sioux City Social Security Office is in Sioux City, at 3555 Southern Hills Dr, open Monday to Friday, 9:00 AM to 4:00 PM. The next closest is the Yankton Social Security Office, about 58 miles away.

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Social Security Offices in Sioux City

Other Offices Near Sioux City

Straight-line distance from the center of Sioux City (U.S. Census Gazetteer) to each office's address (U.S. Census Bureau geocoder). Office hours and phone numbers from SSA's office data, checked against SSA's Office Locator on October 1, 2026; confirm with SSA's Office Locator before you go.

Map of Social Security Offices Near Sioux City

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Social Security office

Which Social Security Office Serves Your ZIP Code in Sioux City?

SSA assigns all 6 ZIP codes in Sioux City to the Sioux City Social Security Office. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.

Social Security office assigned to each ZIP code in Sioux City
ZIP codeOffice SSA assignsDistance
51101Sioux City Social Security Office for ZIP code 511013.8 miles
51103Sioux City Social Security Office for ZIP code 511037.0 miles
51104Sioux City Social Security Office for ZIP code 511046.6 miles
51105Sioux City Social Security Office for ZIP code 511054.3 miles
51106Sioux City Social Security Office for ZIP code 511062.5 miles
51111Sioux City Social Security Office for ZIP code 511112.7 miles

ZIP codes 51101, 51103, 51104, 51105, 51106 and 51111 go to the Sioux City Social Security Office, 3555 Southern Hills Dr, Sioux City.

Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Sioux City (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.

Social Security Offices Near Areas Around Sioux City

Where people in nearby communities go, and how far it is. Each area's office is the one SSA assigns to its ZIP codes.

Social Security Office Near Sergeant Bluff

Sergeant Bluff is about 7.0 miles south of central Sioux City. SSA assigns its ZIP code, 51054, to the Sioux City Social Security Office at 3555 Southern Hills Dr, Sioux City, open Monday to Friday, 9:00 AM to 4:00 PM.

How to Get an Appointment at the Sioux City Social Security Office

SSA asks you to make an appointment before you visit an office. You can schedule one online on SSA's appointment page by answering a few questions; the appointment may be by phone or in person, and you can change or cancel it from the confirmation email or text.

To book by phone, call the Sioux City Social Security Office at (866) 338-2859, or SSA's national number, 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. Help is available in English, Spanish and other languages.

See office hours and appointments for the best times to call and visit.

Can You Skip the Trip?

You can often replace a card, update your address or get a benefit letter online with a my Social Security account. If you need to go in, check what to bring.

Social Security Offices Near Other Iowa Cities

Frequently Asked Questions

Where Is the Social Security Office in Sioux City?

Sioux City Social Security Office: 3555 Southern Hills Dr, Sioux City, IA 51106.

Which Social Security Office Serves My ZIP Code in Sioux City?

SSA assigns all 6 ZIP codes in Sioux City to the Sioux City Social Security Office. SSA assigns offices by ZIP code, and the assigned office isn't always the closest one. Look up your ZIP code in the table on this page or in SSA's Office Locator.

What Are Social Security Office Hours Near Sioux City?

The Sioux City Social Security Office is open Monday to Friday, 9:00 AM to 4:00 PM, according to SSA's office data (checked against SSA's Office Locator on October 1, 2026). Offices close on weekends and federal holidays.

What Is the Phone Number for the Social Security Office Near Sioux City?

SSA lists (866) 338-2859 for the Sioux City Social Security Office. SSA's national number is 1-800-772-1213.

How Do I Make an Appointment at the Social Security Office in Sioux City?

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the Sioux City Social Security Office at (866) 338-2859 or SSA at 1-800-772-1213 (TTY 1-800-325-0778), Monday through Friday, 8 a.m. to 7 p.m. local time. SSA asks you to make an appointment before visiting an office.

Every Social Security office in Iowa

Sources

  1. Social Security Administration, field office and resident station data (updated March 9, 2026)
  2. SSA Office Locator (offices and ZIP code assignments, checked October 1, 2026)
  3. U.S. Census Bureau: geocoder, 2023 Gazetteer files and 2020 ZIP Code Tabulation Area relationship files
  4. SSA: Make an appointment
  5. SSA: Contact by phone
  6. SSA: Office locator guidance (appointments and Card Centers)

Independent site, not affiliated with the Social Security Administration. Office addresses, phone numbers and hours come from SSA's public office data. To apply for benefits or manage your record, go to SSA directly at ssa.gov.