FDIC-insured bank
Frost Bank — San Antonio, TX
Bank headquartered in San Antonio, Texas, part of CULLEN FROST BANKERS INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 111 W Houston St San Antonio, TX 78205 |
| County | Bexar |
| Metro area | San Antonio-New Braunfels, TX |
| Website | www.frostbank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 5510 |
| Federal Reserve RSSD ID | 682563 |
| Status | Active |
| Charter class | SM (STATE) |
| Holding company | CULLEN FROST BANKERS INC |
| Domestic offices | 222 |
| Financials as of | June 30, 2026 |
How to find your Frost Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.frostbank.com.
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Offices nearest to headquarters
| Frost Bank main office San Antonio, TX |
111 W Houston St, 78205 |
| San Antonio Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Austin Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Fort Worth Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Corpus Christi Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Dallas Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Houston Mobile Branch San Antonio, TX |
111 W Houston St, 78205 |
| Mccreless Branch San Antonio, TX |
4202 S New Braunfels Ave, 78223 |
| Alamo Heights Branch San Antonio, TX |
110 Austin Hwy, 78209 |
| South Central Branch San Antonio, TX |
515 Sw Military Dr, 78221 |
| Southwest Military Branch San Antonio, TX |
2703 Sw Military Dr, 78224 |
| Citizens Branch San Antonio, TX |
3803 Nw Loop 410, 78229 |
222 offices in total. Browse them by city through the state pages.
Where Frost Bank has offices
Cities with the most Frost Bank offices
Other banks headquartered in San Antonio
| Broadway National Bank | $5.42 billion |
| Vantage Bank Texas | $5.14 billion |
| Jefferson Bank | $2.88 billion |
Largest banks headquartered elsewhere in Texas
| Charles Schwab Bank, SSB Westlake | $250.83 billion |
| Prosperity Bank El Campo | $43.88 billion |
| Texas Capital Bank Dallas | $33.62 billion |
| Charles Schwab Premier Bank, SSB Westlake | $26.58 billion |
| Sunflower Bank, National Association Dallas | $15.65 billion |
| First Financial Bank Abilene | $15.23 billion |
| NexBank Dallas | $14.16 billion |
| PlainsCapital Bank University Park | $12.68 billion |
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