California · Office Details From SSA, Updated March 9, 2026
Diamond Bar, CA has no Social Security office of its own. The closest is the Brea Social Security Office in Brea, about 7 miles away.
3230 E Imperial Hwy, Suite 150 1st Floor
Brea, CA 92821 · about 6.6 mi
Call (866) 593-2757 for the Brea Social Security OfficeDirections to the Brea Social Security Office
2130 N Garey Ave
Pomona, CA 91767 · about 7.0 mi
Call (888) 808-5486 for the Pomona Valley Social Security OfficeDirections to the Pomona Valley Social Security Office
501 S Vincent Ave, STE 201
West Covina, CA 91790 · about 7.7 mi
Call (866) 964-0162 for the West Covina Social Security OfficeDirections to the West Covina Social Security Office
1165 E Route 66
Glendora, CA 91740 · about 8.9 mi
Call (866) 964-6045 for the Glendora Social Security OfficeDirections to the Glendora Social Security Office
1100 E Holt Blvd
Ontario, CA 91761 · about 11 mi
Call (866) 331-2216 for the Ontario Social Security OfficeDirections to the Ontario Social Security Office
7200 Greenleaf Ave, Suite 200
Whittier, CA 90602 · about 13 mi
Call (866) 336-2187 for the Whittier Social Security OfficeDirections to the Whittier Social Security Office
Straight-line distance from the center of Diamond Bar.
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Appeals from these offices are heard at Orange, CA Hearing Office, Pasadena, CA Hearing Office and Norwalk, CA Hearing Office. Orange, CA Hearing Office · Pasadena, CA Hearing Office · Norwalk, CA Hearing Office
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Independent site, not affiliated with the Social Security Administration. Office and hearing office details come from SSA's public data and locators. To apply for benefits, appeal or manage your record, go to SSA directly at ssa.gov.