Which Social Security Office Serves Your ZIP Code in San Marcos?
SSA assigns San Marcos's ZIP code, 78666, to the San Marcos Social Security Office. SSA assigns offices by ZIP code, so the office to use is the one listed for your ZIP.
Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps San Marcos (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 San Marcos
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 New Braunfels
New Braunfels is about 16 miles southwest of central San Marcos. SSA assigns its ZIP code, 78130, to the Seguin Social Security Office at 927 S St Hwy 123 Byp, Seguin, open Monday to Friday, 9:00 AM to 4:00 PM.
More on Social Security offices near New Braunfels
Social Security Office Near Seguin
Seguin is about 20 miles south of central San Marcos. SSA assigns its ZIP code, 78155, to the Seguin Social Security Office at 927 S St Hwy 123 Byp, Seguin, open Monday to Friday, 9:00 AM to 4:00 PM.
More on Social Security offices near Seguin
Social Security Office Near Kyle
Kyle is about 9.0 miles north of central San Marcos. SSA assigns its ZIP codes (78640 and 78666) to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM.
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Social Security Office Near Lockhart
Lockhart is about 15 miles east of central San Marcos. SSA assigns its ZIP code, 78644, to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM.
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Social Security Office Near Canyon Lake
Canyon Lake is about 20 miles west of central San Marcos. Its ZIP codes are split between offices: 78070 and 78132 go to the San Antonio Central Social Security Office in San Antonio; 78133 and 78623 go to the Seguin Social Security Office in Seguin.
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Social Security Office Near Buda
Buda is about 15 miles north of central San Marcos. SSA assigns its ZIP code, 78610, to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM. The Austin South Social Security Office is closer to central Buda (about 11 miles, against 14 miles), but it isn't the office SSA assigns.
More on Social Security offices near Buda
Social Security Office Near Redwood
Redwood is about 4.6 miles south of central San Marcos. SSA assigns its ZIP code, 78666, to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM.
Social Security Office Near Uhland
Uhland is about 11 miles northeast of central San Marcos. SSA assigns its ZIP code, 78640, to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM.
Social Security Office Near Martindale
Martindale is about 6.2 miles east of central San Marcos. SSA assigns its ZIP code, 78655, to the San Marcos Social Security Office at 900 Bugg Lane, Suite 200, San Marcos, open Monday to Friday, 9:00 AM to 4:00 PM.
Video Appointments Near San Marcos
SSA also meets people by video at partner sites: San Antonio Hud - Alamo Community College District Eastside in San Antonio (about 41 miles). Ask an office whether a video appointment fits your visit.
Social Security Offices Near Other Texas Cities
Frequently Asked Questions
Where Is the Social Security Office in San Marcos?
San Marcos Social Security Office: 900 Bugg Lane, Suite 200, San Marcos, TX 78666.
Which Social Security Office Serves My ZIP Code in San Marcos?
SSA assigns San Marcos's ZIP code, 78666, to the San Marcos Social Security Office. 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 San Marcos?
The San Marcos 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 San Marcos?
SSA lists (866) 388-8515 for the San Marcos Social Security Office. SSA's national number is 1-800-772-1213.
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