SSA splits Southwick's 46 ZIP codes among 5 offices: 22 to the Springfield Social Security Office, 18 to the Hartford Social Security Office, 3 to the Holyoke Social Security Office, 2 to the Torrington Social Security Office and 1 to the East Hartford Social Security Office. For 10 of them, the assigned office isn't the closest one, so check your ZIP before you go.
ZIP codes 01001, 01008, 01020, 01028, 01030, 01034, 01071, 01077, 01085, 01089, 01097, 01103, 01104, 01105, 01106, 01107, 01108, 01109, 01118, 01119, 01144 and 06082 go to the Springfield Social Security Office, 70 Bond Street, Springfield.
ZIP codes 06002, 06019, 06020, 06026, 06027, 06035, 06059, 06060, 06070, 06078, 06080, 06081, 06090, 06091, 06092, 06093, 06095 and 06096 go to the Hartford Social Security Office, 135 High St, Suite 101, Hartford.
ZIP codes 01013, 01040 and 01073 go to the Holyoke Social Security Office, 200 High Street, 2nd Floor, Holyoke.
ZIP codes 06063 and 06065 go to the Torrington Social Security Office, 147 Litchfield Street, Torrington.
ZIP code 06088 goes to the East Hartford Social Security Office, 478 Burnside Avenue, East Hartford.
Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Southwick (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.