New York · Checked Against SSA's Locator October 1, 2026
SSA assigns Mamaroneck, NY's ZIP code, 10543, to the New Rochelle Social Security Office at 85 Harrison St, Street Level, New Rochelle, about 3.2 miles away, phone (855) 210-1026, open Monday to Friday, 9:00 AM to 4:00 PM.
85 Harrison St, Street Level
New Rochelle, NY 10801
Call (855) 210-1026 for the New Rochelle Social Security OfficeDirections to the New Rochelle Social Security Office
Fax: (833) 902-2551
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
3247 Laconia Ave
Bronx, NY 10469
Call (866) 347-0054 for the Laconia Avenue Social Security OfficeDirections to the Laconia Avenue Social Security Office
Fax: (833) 950-2988
Limited services: this office doesn't handle Social Security card replacements or updates. Go to another office for card tasks.
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
297 Knollwood Rd, Suite 4a
White Plains, NY 10607
Call (866) 331-8134 for the White Plains Social Security OfficeDirections to the White Plains Social Security Office
Fax: (833) 950-2376
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
20 South Broadway, Suite 500
Yonkers, NY 10701
Call (866) 331-6404 for the Yonkers Social Security OfficeDirections to the Yonkers Social Security Office
Fax: (833) 515-0475
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
1380 Parker St, 2nd Floor
Bronx, NY 10462
Call (866) 931-2526 for the East Bronx Social Security OfficeDirections to the East Bronx Social Security Office
Fax: (833) 950-2374
Limited services: this office doesn't handle Social Security card replacements or updates. Go to another office for card tasks.
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
2501 Grand Concourse, 2nd Floor
Bronx, NY 10468
Call (877) 619-2852 for the North Bronx Social Security OfficeDirections to the North Bronx Social Security Office
Fax: (833) 873-4347
Limited services: this office doesn't handle Social Security card replacements or updates. Go to another office for card tasks.
| Monday | 9:00 AM to 4:00 PM |
|---|---|
| Tuesday | 9:00 AM to 4:00 PM |
| Wednesday | 9:00 AM to 4:00 PM |
| Thursday | 9:00 AM to 4:00 PM |
| Friday | 9:00 AM to 4:00 PM |
| Saturday and Sunday | Closed |
Straight-line distance from the center of Mamaroneck (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.
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SSA assigns Mamaroneck's ZIP code, 10543, to the New Rochelle Social Security Office in New Rochelle. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.
| ZIP code | Office SSA assigns | Distance |
|---|---|---|
| 10543 | New Rochelle Social Security Office for ZIP code 10543 | 3.6 miles |
ZIP code 10543 goes to the New Rochelle Social Security Office, 85 Harrison St, Street Level, New Rochelle.
Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Mamaroneck (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.
Where people in nearby communities go, and how far it is. Each area's office is the one SSA assigns to its ZIP codes.
Elmsford is about 9.3 miles northwest of central Mamaroneck. SSA assigns its ZIP code, 10523, to the White Plains Social Security Office at 297 Knollwood Rd, Suite 4a, White Plains, open Monday to Friday, 9:00 AM to 4:00 PM.
Bronxville is about 5.2 miles west of central Mamaroneck. SSA assigns its ZIP code, 10708, to the Yonkers Social Security Office at 20 South Broadway, Suite 500, Yonkers, open Monday to Friday, 9:00 AM to 4:00 PM.
Irvington is about 10 miles northwest of central Mamaroneck. Its ZIP codes are split between offices: 10503 goes to the Yonkers Social Security Office in Yonkers; 10533 goes to the White Plains Social Security Office in White Plains.
Yonkers is about 7.4 miles west of central Mamaroneck. Its ZIP codes are split between offices: 10701, 10703, 10704, 10705, 10708 and 10710 go to the Yonkers Social Security Office in Yonkers; 10707 goes to the New Rochelle Social Security Office in New Rochelle.
Roslyn is about 10 miles southeast of central Mamaroneck. SSA assigns its ZIP code, 11576, to the Mineola Social Security Office at 163 Mineola Blvd, 2nd Fl, Mineola, open Monday to Friday, 9:00 AM to 4:00 PM.
Roslyn Estates is about 10 miles south of central Mamaroneck. SSA assigns its ZIP code, 11576, to the Mineola Social Security Office at 163 Mineola Blvd, 2nd Fl, Mineola, open Monday to Friday, 9:00 AM to 4:00 PM.
Rye is about 2.2 miles east of central Mamaroneck. SSA assigns its ZIP code, 10580, to the New Rochelle Social Security Office at 85 Harrison St, Street Level, New Rochelle, open Monday to Friday, 9:00 AM to 4:00 PM.
New Rochelle is about 2.9 miles west of central Mamaroneck. SSA assigns its ZIP codes (10801, 10804 and 10805) to the New Rochelle Social Security Office at 85 Harrison St, Street Level, New Rochelle, open Monday to Friday, 9:00 AM to 4:00 PM.
Scarsdale is about 4.8 miles northwest of central Mamaroneck. SSA assigns its ZIP code, 10583, to the White Plains Social Security Office at 297 Knollwood Rd, Suite 4a, White Plains, open Monday to Friday, 9:00 AM to 4:00 PM.
Glen Cove is about 5.6 miles southeast of central Mamaroneck. SSA assigns its ZIP code, 11542, to the Mineola Social Security Office at 163 Mineola Blvd, 2nd Fl, Mineola, open Monday to Friday, 9:00 AM to 4:00 PM. The New Rochelle Social Security Office is closer to central Glen Cove (about 7.3 miles, against 9.7 miles), but it isn't the office SSA assigns.
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 New Rochelle Social Security Office at (855) 210-1026, 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.
SSA also meets people by video at partner sites: Norwalk Public Library in Norwalk (about 20 miles). Ask an office whether a video appointment fits your visit.
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.
There isn't an office in Mamaroneck, NY itself. The closest is the New Rochelle Social Security Office, 85 Harrison St, Street Level, New Rochelle, NY 10801, about 3.2 miles away.
SSA assigns Mamaroneck's ZIP code, 10543, to the New Rochelle Social Security Office in New Rochelle. 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.
The New Rochelle 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.
SSA lists (855) 210-1026 for the New Rochelle Social Security Office. SSA's national number is 1-800-772-1213.
Schedule online on SSA's appointment page, where the appointment may be by phone or in person, or call the New Rochelle Social Security Office at (855) 210-1026 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 York
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.