FDIC-insured bank
Southwestern National Bank — Houston, TX
Bank headquartered in Houston, Texas, part of SWNB BCORP INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 9601 Bellaire Blvd Houston, TX 77036 |
| County | Harris |
| Metro area | Houston-The Woodlands-Sugar Land, TX |
| Website | www.southwesternbank.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 34319 |
| Federal Reserve RSSD ID | 2625724 |
| Status | Active |
| Charter class | N (OCC) |
| Holding company | SWNB BCORP INC |
| Domestic offices | 9 |
| Financials as of | June 30, 2026 |
How to find your Southwestern National 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.southwesternbank.com.
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Offices nearest to headquarters
| Southwestern National Bank main office Houston, TX |
9601 Bellaire Blvd, 77036 |
| Sugar Land Branch Sugar Land, TX |
3508 Highway 6, 77478 |
| Austin Branch Austin, TX |
11220 N Lamar Blvd, 78753 |
| Dallas Regional Office Richardson, TX |
500 N Central Expy, 75080 |
| Royal Lane Branch Dallas, TX |
2534 Royal Ln, 75229 |
| Plano Branch Plano, TX |
2304 Coit Rd, 75075 |
| Anaheim Branch Anaheim, CA |
2951 W Ball Rd Unit 100, 92804 |
| Wilshire Branch Los Angeles, CA |
3530 Wilshire Boulevard, Suite #1520, 90010 |
| San Mateo Branch San Mateo, CA |
1528 S El Camino Real, 94402 |
Where Southwestern National Bank has offices
Cities with the most Southwestern National Bank offices
Other banks headquartered in Houston
| Cornerstone Capital Bank, SSB | $3.67 billion |
| American First National Bank | $2.89 billion |
| Wells Fargo Bank South Central, National Association | $2.59 billion |
| Golden Bank, National Association | $2.28 billion |
| Central Bank | $1.42 billion |
| Texas Gulf Bank, National Association | $726.94 million |
| Gulf Capital Bank | $596.45 million |
| Integrity Bank SSB | $339.61 million |
Largest banks headquartered elsewhere in Texas
| Charles Schwab Bank, SSB Westlake | $250.83 billion |
| Frost Bank San Antonio | $53.95 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 |
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