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Overview
- Naturalization interviews for San Antonio applicants are at the USCIS San Antonio Field Office, 20760 North US Highway 281, where an officer tests English and civics.
- Biometrics for San Antonio N-400 applicants are taken at the Application Support Center, 2000 SE Loop 410, Suite 115, and military personnel are seen without an appointment.
- San Antonio N-400 timing is posted on the USCIS processing-times page, and the Dallas and Houston offices were completing 80 percent of cases within 12 to 13 months.
- Permanent residents serving at Joint Base San Antonio can naturalize through military service with a certified N-426, and Mexican nationals keep their Mexican nationality after becoming U.S. citizens.
- Phone
- (210) 787-3916
- Reviewed
- October 19, 2026
How naturalization runs in San Antonio
Most people file the N-400 online, five years after becoming a permanent resident, or three years if married to and living with a U.S. citizen. USCIS then schedules biometrics at the Application Support Center, 2000 SE Loop 410, Suite 115, open 8 a.m. to 4 p.m. on weekdays by appointment, and later an interview at the San Antonio Field Office, 20760 North US Highway 281, where an officer tests English and civics and goes through the application line by line. On our review date, USCIS reported that 80 percent of N-400s were completed within 12 to 13 months at the Dallas and Houston field offices; the San Antonio figure is on the USCIS processing-times page. Approved applicants take the oath at a ceremony scheduled by the field office.
The part of naturalization that surprises people is that the officer looks at how you got the green card and everything since. Trips outside the United States longer than six months, a divorce from the spouse who petitioned you, unpaid taxes or child support, an arrest in Bexar County that was dismissed, a vote cast by mistake, or a DWI can each turn an easy case into a denial or worse. Before we file, we pull the client's immigration file and criminal history and resolve what can be resolved. If a problem cannot be fixed, we say so, because an N-400 that exposes a defect in the green card can lead to proceedings at the Dolorosa Street immigration court. It is far easier to prepare for a question than to explain an answer, so if any of those situations applies to you, have the file reviewed before you submit the N-400.
Military families, children and dual nationality
Joint Base San Antonio, which takes in Fort Sam Houston, Lackland and Randolph, has roughly 33,000 active-duty personnel, and Lackland is where every Air Force recruit does basic training. Lawful permanent residents serving honorably can apply under section 328 or 329 of the immigration law with a certified Form N-426 from their command, and for those who served during a designated period of hostilities the usual residence requirement does not apply. The San Antonio Application Support Center sees military personnel without an appointment. We also handle the family side: the spouse of a service member who may qualify for expedited naturalization, and the parent or spouse who first needs parole in place and a green card.
A child under 18 who is a permanent resident and lives in the United States in the legal and physical custody of a citizen parent becomes a citizen automatically when the parent naturalizes. Proof is a certificate of citizenship from USCIS or a U.S. passport. Many San Antonio families discover years later that a child derived citizenship through a parent and never got the document; we file the N-600 and gather the records, including Mexican birth and marriage certificates through our Juárez and Chihuahua offices when the family's history runs through both countries. Becoming a U.S. citizen does not cost a Mexican national their Mexican nationality. Mexico recognizes dual nationality, and the Consulate General of Mexico at 127 Navarro Street continues to issue passports and consular IDs to dual nationals, so property, family and travel plans in Mexico stay in order after the oath.
Citizenship cases we handle from San Antonio
- A permanent resident in San Antonio, five years after the green card, with a clean record and a straightforward N-400
- The spouse of a U.S. citizen in Bexar County applying after three years of residence
- An airman at Lackland or soldier at Fort Sam Houston applying for naturalization through military service with a certified N-426
- A resident who spent eight months in Mexico caring for a parent and needs to address continuity of residence
- An applicant with a dismissed assault charge in Bexar County who needs certified court records before filing
- A resident who got the green card through a first marriage that ended, now filing on the five-year track
- A parent who naturalized when a child was a teenager and now needs a certificate of citizenship for that adult child
- An applicant over 50 who qualifies to take the civics test in Spanish under the age and residence exception
Sound like your situation? Request a consultation or call (210) 787-3916.
How we run a naturalization case from San Antonio
Eligibility and risk screening
We confirm the residence and physical-presence dates, pull the immigration and criminal record, and flag anything the officer will ask about.
Prepare and file the N-400
We prepare the application with the supporting documents, tax transcripts and travel history, and file it, with the N-426 for service members.
Biometrics
The client attends the appointment at the Application Support Center on SE Loop 410; military clients can walk in.
Interview preparation
We run through the English and civics test, the questions on the form, and any issue in the file, in English or Spanish, before the interview on US 281.
Interview, oath and after
We attend the interview at the San Antonio Field Office, handle any request for evidence or second interview, and help with passports and certificates for children after the oath.
Questions from San Antonio clients
How long does citizenship take in San Antonio?
On our review date USCIS reported that 80 percent of N-400 applications were completed within 12 months at the Houston field office and 13 months at Dallas; the San Antonio Field Office figure is posted on the USCIS processing-times page and we check it when we file. Count on roughly a year from filing to oath, longer if the file raises questions.
Where is the citizenship interview in San Antonio?
At the USCIS San Antonio Field Office, 20760 North US Highway 281, San Antonio, TX 78258. Bring the interview notice, your green card, all passports, and the originals of everything in the application.
Do I need a lawyer for my naturalization interview in San Antonio?
Not if your record is clean and your residence is uninterrupted. You should have the file reviewed if you have any arrest, a long trip abroad, a divorce from the petitioning spouse, unpaid taxes or child support, or doubts about how the green card was obtained. We attend the interview with clients in those situations.
How much does a citizenship lawyer cost in San Antonio?
Consultations are available in person at our downtown office, by phone or by video, in English and Spanish, and fees are discussed at the consultation.
Can I naturalize through the military at Joint Base San Antonio?
Yes. Permanent residents serving honorably, and during designated periods of hostilities any service member, can apply with a certified N-426 from the command. The residence and physical-presence requirements are reduced or waived, and the San Antonio Application Support Center sees military personnel without an appointment.
Can I take the citizenship test in Spanish?
If you are 50 or older with 20 years as a permanent resident, or 55 or older with 15 years, you may take the civics test in Spanish with an interpreter and are exempt from the English test. Applicants 65 or older with 20 years take a shorter civics test.
Will a DWI in Bexar County stop me from becoming a citizen?
Not permanently in most cases, but it matters. A single DWI usually affects good moral character for the period it falls in and may mean waiting to file; multiple offenses or related convictions can bar you. Bring the certified court records to the consultation and we will tell you when to file.
Can I lose my green card by applying for citizenship?
It can happen if the application reveals a problem with the green card itself or a removable conviction, since the officer reviews the whole file. That is why we screen the record before filing rather than after.
Do my children become citizens when I do?
Children under 18 who are permanent residents and live in your legal and physical custody in the United States become citizens automatically when you naturalize. We file the N-600 for the certificate of citizenship or help with the passport application.
Will I lose my Mexican nationality?
No. Mexico recognizes dual nationality, and the Mexican consulate at 127 Navarro Street continues to issue passports and consular IDs to dual nationals.
Every case is different — these answers are general information, not legal advice about your situation. For advice about your case, call (210) 787-3916 or request a consultation.
