South Dakota · Checked Against SSA's Locator October 1, 2026

Social Security Offices Near Alcester, SD

Where Is the Social Security Office Nearest Alcester, SD?

SSA assigns Alcester, SD's ZIP code, 57001, to the Sioux City Social Security Office at 3555 Southern Hills Dr, Sioux City, about 42 miles away, phone (866) 338-2859, open Monday to Friday, 9:00 AM to 4:00 PM. The Sioux Falls Social Security Office in Sioux Falls is closer (about 33 miles), but it isn't the office SSA assigns.

Reviewed by ·

Closest Social Security Offices to Alcester, SD

Straight-line distance from the center of Alcester (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 Alcester

Loading map…

Social Security office

Which Social Security Office Serves Your ZIP Code in Alcester?

SSA assigns Alcester's ZIP code, 57001, to the Sioux City Social Security Office in Sioux City. For one ZIP code, the assigned office isn't the closest one, so check your ZIP before you go.

Social Security office assigned to each ZIP code in Alcester
ZIP codeOffice SSA assignsDistance
57001Sioux City Social Security Office for ZIP code 57001Closest: Sioux Falls Social Security Office, 35 miles41 miles

ZIP code 57001 goes 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 Alcester (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.

How to Get an Appointment at the Sioux Falls 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 Falls Social Security Office at (877) 274-5421, 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 South Dakota Cities

Frequently Asked Questions

Where Is the Social Security Office in Alcester?

There isn't an office in Alcester, SD itself. The closest is the Sioux Falls Social Security Office, 5021 S Nevada Ave, Sioux Falls, SD 57108, about 33 miles away.

Which Social Security Office Serves My ZIP Code in Alcester?

SSA assigns Alcester's ZIP code, 57001, to the Sioux City Social Security Office in Sioux City. 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 Alcester?

The Sioux Falls 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 Alcester?

SSA lists (877) 274-5421 for the Sioux Falls Social Security Office. SSA's national number is 1-800-772-1213.

How Do I Make an Appointment at the Social Security Office Near Alcester?

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the Sioux Falls Social Security Office at (877) 274-5421 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 South Dakota

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.