Fort Sam Houston Texas ZIP Code [2026 Updated]: Complete Fort Sam Houston ZIP Code List by Area
Fort Sam Houston is one of the most important military installations in the United States and a key part of Joint Base San Antonio. Located in northeastern San Antonio, Texas, the base is known for its military training facilities, medical centers, administrative headquarters, and historic significance. If you’re searching for the Fort Sam Houston, Texas ZIP code, knowing the correct postal code is essential for mail delivery, military correspondence, relocation, and address verification.
Fort Sam Houston ZIP Codes
| ZIP Code | Area / Location |
| 78234 | Fort Sam Houston (Primary ZIP Code) |
| 78208 | Adjacent East San Antonio Area |
| 78209 | Alamo Heights & Nearby Communities |
| 78218 | Northeast San Antonio |
| 78219 | East San Antonio |
| 78235 | Military Facilities Area |
Areas Served by Fort Sam Houston ZIP Code
| ZIP Code | Coverage Area |
| 78234 | Fort Sam Houston Main Installation |
| 78234 | Military Housing Areas |
| 78234 | Administrative Offices |
| 78234 | Training Facilities |
| 78234 | Joint Base San Antonio Facilities |
| 78234 | Medical and Support Services |
Nearby ZIP Codes
| ZIP Code | Area |
| 78205 | Downtown San Antonio |
| 78208 | Near East Side |
| 78209 | Alamo Heights |
| 78216 | North Central San Antonio |
| 78218 | Northeast San Antonio |
| 78219 | East San Antonio |
| 78229 | Medical Center Area |
| 78235 | Military Facilities Area |
Fort Sam Houston ZIP Code Range
The primary ZIP code associated with Fort Sam Houston is 78234. Most military offices, housing units, and official facilities located on the installation use this postal code.
How to Find the Right Fort Sam Houston ZIP Code
While 78234 is the main ZIP code for Fort Sam Houston, the exact postal code may vary for nearby military facilities or surrounding neighborhoods.
- Check the complete mailing address before sending mail.
- Use the USPS ZIP Code Lookup tool for official ZIP code verification.
- Review military orders, housing documents, or official correspondence.
- Confirm building and unit information when mailing military personnel.
- Verify ZIP codes before shipping packages to prevent delays.
Popular ZIP Codes Near Fort Sam Houston
Some of the most searched ZIP codes around Fort Sam Houston include:
- 78234 – Fort Sam Houston
- 78209 – Alamo Heights
- 78218 – Northeast San Antonio
- 78219 – East San Antonio
- 78235 – Military Facilities Area
- 78205 – Downtown San Antonio
- 78216 – North Central San Antonio
- 78229 – Medical Center Area
Frequently Asked Questions
Q: What is the ZIP code for Fort Sam Houston Texas?
A: The primary ZIP code for Fort Sam Houston is 78234.
Q: Is Fort Sam Houston part of San Antonio?
A: Yes. Fort Sam Houston is located within the city of San Antonio and is part of Joint Base San Antonio.
Q: Does Fort Sam Houston have more than one ZIP code?
A: Most installation addresses use 78234, while nearby military and civilian areas may use different ZIP codes.
Q: What county is Fort Sam Houston in?
A: Fort Sam Houston is located in Bexar County, Texas.
Final Thoughts
If you’re looking for the Fort Sam Houston, Texas ZIP code, 78234 is the primary postal code used for most military facilities, housing areas, and official addresses on the installation. Whether you’re relocating, mailing correspondence, or verifying an address, using the correct ZIP code helps ensure accurate delivery and location identification.
