USCIS Application Support Center — San Marcos, CA
The Application Support Center - San Marcos, CA is a USCIS Application Support Center (ASC) at USCIS Application Support Center, 727 West San Marcos Boulevard, Suites 101 - 103, San Marcos, CA 92078-1244. ASCs are the offices where USCIS takes biometrics (fingerprints, photographs and signatures) for applications that require them. In USCIS’s field-office-by-ZIP file dated August 28, 2026, 60 ZIP codes in 1 county (CA) are assigned to this ASC.
General information, not legal advice. For your specific case, talk to an immigration attorney or an accredited representative.
Quick reference
| As listed on the USCIS office page (checked October 15, 2026) | |
|---|---|
| Address | USCIS Application Support Center, 727 West San Marcos Boulevard, Suites 101 - 103, San Marcos, CA 92078-1244 |
| Hours | Monday to Friday, 8:00 a.m. - 4:00 p.m.; closed Saturday and Sunday |
| Military personnel | This office provides services to military personnel from 9:00AM to 3:00PM, Monday through Friday. Military personnel do not need an appointment. |
| Parking and accessibility | There is free parking available. ACCESSIBILITY: This office is accessible to people with disabilities. The accessible entrance is located at the main entrance (Suite 103). |
| Public transportation | Bus service is available. |
| USCIS page | Application Support Center - San Marcos, CA |
Getting there: USCIS driving directions
The ASC’s USCIS page gives these driving directions (quoted as published):
From Interstate 5, head East on Highway 78. Take the exit for West San Marcos Boulevard. The Application Support Center is on the right in the Pavilion Shopping Center. From Interstate 15, head West on Highway 78. Take the exit for West San Marcos Boulevard. The Application Support Center is on the right in the Pavilion Shopping Center.
ZIP codes and counties USCIS assigns to this ASC
USCIS’s field-office-by-ZIP file (dated August 28, 2026) names an ASC for every ZIP code. These are the counties with ZIP codes assigned to the San Marcos ASC, with up to four of their cities (most ZIP codes first, then alphabetical). USCIS assigns ZIP codes, not whole counties, so a county can be split between ASCs.
| County | State | ZIP codes | Cities |
|---|---|---|---|
| San Diego | CA | 60 | San Diego, Escondido, Oceanside, Carlsbad, … |
Every ZIP code assigned to the San Marcos ASC, by city
From the same USCIS file (Aug 28, 2026), retired ZIP codes excluded:
- Bonsall, CA: 92003
- Borrego Springs, CA: 92004
- Camp Pendleton, CA: 92055
- Cardiff by the Sea, CA: 92007
- Carlsbad, CA: 92008, 92009, 92010, 92011, 92013, 92018
- Del Mar, CA: 92014
- Encinitas, CA: 92023, 92024
- Escondido, CA: 92025, 92026, 92027, 92029, 92030, 92033, 92046
- Fallbrook, CA: 92028, 92088
- Julian, CA: 92036
- Oceanside, CA: 92049, 92051, 92052, 92054, 92056, 92057, 92058
- Pala, CA: 92059
- Palomar Mountain, CA: 92060
- Pauma Valley, CA: 92061
- Poway, CA: 92064, 92074
- Ramona, CA: 92065
- Ranchita, CA: 92066
- Rancho Santa Fe, CA: 92067, 92091
- San Diego, CA: 92127, 92128, 92129, 92130, 92150, 92172, 92198, 92199
- San Luis Rey, CA: 92068
- San Marcos, CA: 92069, 92078, 92079, 92096
- Santa Ysabel, CA: 92070
- Solana Beach, CA: 92075
- Valley Center, CA: 92082
- Vista, CA: 92081, 92083, 92084, 92085
- Warner Springs, CA: 92086
Field offices whose ZIP codes route here (from the same file):
- USCIS San Diego Field Office: 60 ZIP codes
Before your appointment: what USCIS says
- Go only with a notice. The ASC’s USCIS page says applicants need to appear at the assigned ASC on the appointment notice.
- What to bring. USCIS’s biometrics page lists your ASC appointment notice (Form I-797C), every notice if you received several, and valid photo identification (such as a Green Card, passport or driver’s license).
- Rescheduling. USCIS’s biometrics page says the request must be made through your USCIS online account (not by mail), before the original appointment, with good cause, and at least 12 hours before the appointment time; to use a different ASC you must reschedule in advance and select it. If the request is less than 12 hours from the appointment or you missed it, the page says to call the USCIS Contact Center at 800-375-5283 (TTY 800-767-1833).
- Closures. If the ASC closes for weather or a facility issue, USCIS says it reschedules the appointment automatically; it asks you to check its Office Closings page before traveling.
- No weapons. USCIS says federal law prohibits weapons such as firearms, knives, pepper spray and ammunition at any USCIS facility.
Related information
Last verified: 2026-10-15. General procedural information for educational purposes, not legal advice; for your specific case, consult an immigration attorney or accredited representative. Office data comes from official USCIS pages and files and can change. Your appointment notice is what counts.