New Hampshire · Checked Against SSA's Locator October 1, 2026

Social Security Offices Near Somersworth, NH

Where Is the Social Security Office Nearest Somersworth, NH?

SSA assigns Somersworth, NH's ZIP code, 03878, to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, about 12 miles away, phone (888) 397-9796, open Monday to Friday, 9:00 AM to 4:00 PM.

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Closest Social Security Offices to Somersworth, NH

Straight-line distance from the center of Somersworth (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 Somersworth

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Social Security office

Which Social Security Office Serves Your ZIP Code in Somersworth?

SSA assigns Somersworth's ZIP code, 03878, to the Portsmouth Social Security Office in Portsmouth. 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 Somersworth
ZIP codeOffice SSA assignsDistance
03878Portsmouth Social Security Office for ZIP code 0387812 miles

ZIP code 03878 goes to the Portsmouth Social Security Office, 215 Commerce Way, STE 200, Portsmouth.

Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Somersworth (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 Somersworth

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 Dover

Dover is about 4.6 miles south of central Somersworth. SSA assigns its ZIP code, 03820, to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Dover

Social Security Office Near Portsmouth

Portsmouth is about 14 miles south of central Somersworth. SSA assigns its ZIP code, 03801, to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Portsmouth

Social Security Office Near Exeter

Exeter is about 19 miles south of central Somersworth. SSA assigns its ZIP code, 03833, to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Exeter

Social Security Office Near Rochester

Rochester is about 5.5 miles northwest of central Somersworth. SSA assigns its ZIP codes (03839, 03867 and 03868) to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Rochester

Social Security Office Near Durham

Durham is about 7.9 miles south of central Somersworth. SSA assigns its ZIP code, 03824, to the Portsmouth Social Security Office at 215 Commerce Way, STE 200, Portsmouth, open Monday to Friday, 9:00 AM to 4:00 PM.

More on Social Security offices near Durham

How to Get an Appointment at the Portsmouth 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 Portsmouth Social Security Office at (888) 397-9796, 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 New Hampshire Cities

Frequently Asked Questions

Where Is the Social Security Office in Somersworth?

There isn't an office in Somersworth, NH itself. The closest is the Portsmouth Social Security Office, 215 Commerce Way, STE 200, Portsmouth, NH 03801, about 12 miles away.

Which Social Security Office Serves My ZIP Code in Somersworth?

SSA assigns Somersworth's ZIP code, 03878, to the Portsmouth Social Security Office in Portsmouth. 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 Somersworth?

The Portsmouth 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 Somersworth?

SSA lists (888) 397-9796 for the Portsmouth Social Security Office. SSA's national number is 1-800-772-1213.

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

Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the Portsmouth Social Security Office at (888) 397-9796 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 New Hampshire

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.