Oshkosh, WI Social Security office at 400 City Center Ste B, 54901
The Oshkosh Social Security office at 400 City Center Ste B is one of 26 field offices in Wisconsin and 1,182 nationwide.
Oshkosh office hours
- Monday 9:00 AM – 4:00 PM
- Tuesday 9:00 AM – 4:00 PM
- Wednesday 9:00 AM – 4:00 PM
- Thursday 9:00 AM – 4:00 PM
- Friday 9:00 AM – 4:00 PM
- Saturday Closed
- Sunday Closed
Best time to visit & closures
Upcoming Federal Holiday Closures
Can you skip a trip to the Oshkosh office?
| Task | Best Method | Fastest Option | Oshkosh Visit Notes & Originals |
|---|---|---|---|
| Replace a Social Security card | 🟢 Online / Phone | Online at SSA.gov or by phone | Bring unexpired photo ID only if online replacement is unavailable. |
| Benefit verification (award) letter | 🟢 Instant Online | Download PDF online or call 1-800-772-1213 | No office visit needed unless you require an immediate stamped printout. |
| Update direct deposit or address | 🟢 Online / Phone | Online account or automated phone line | No trip needed to Oshkosh. |
| Apply for Retirement, SSDI, or Medicare | 🟡 Call First | Online application or phone interview | Call (877) 445-0834 to book an appointment before visiting. |
| Apply for SSI benefits | 🟡 Call First | Scheduled phone or in-person interview | Call ahead; bring income, bank, and residency records. |
| First-time SSN card or legal name change | 🔴 In-Person Originals | Start online, then bring originals | Must present original/certified marriage or court order + photo ID. |
Oshkosh office location
The written address (400 City Center Ste B, Oshkosh, WI 54901) remains the address to use.
Before you visit the Oshkosh office
Book Appointment First
Call (877) 445-0834 or 1-800-772-1213 before driving.
Unexpired Photo ID + Originals
Bring original or certified records only (no photocopies). See checklist →
Direct Numbers & Codes
Local: (877) 445-0834 · TTY: 1-800-325-0778 · Fax: (833) 596-0595 · Code #545
Services at the Oshkosh Social Security office
Frequently asked questions about the Oshkosh office
What are the published hours for the Oshkosh office?
The published schedule is Mon–Fri: 9:00 AM – 4:00 PM. The office is closed on weekends and federal holidays.
Do I need an appointment at the Oshkosh office?
Many Social Security services require an appointment. Call the local office at (877) 445-0834 or the national line at 1-800-772-1213 before visiting.
What phone number should I call for the Oshkosh office?
Call the local branch at (877) 445-0834, the national toll-free line at 1-800-772-1213, or TTY 1-800-325-0778.
What documents should I bring to the office?
Bring an unexpired government photo ID and original or certified documents for your task. Photocopies and notarized copies are not accepted.
Can I complete my Social Security task online?
Yes. Replacement cards, benefit verification letters, and address updates can be completed online through your official my Social Security account. Visit my Social Security at SSA.gov ↗ to start online.
Are these hours live, and is this an official SSA page?
No on both. These are published weekly hours, and SSA Office Finder is an independent directory. Verify official notices at SSA.gov ↗.
Official government portal: Social Security Administration (SSA.gov) ↗