MUFG Union Bank Routing Numbers in California

MUFG Union Bank has 25 routing numbers registered in California. When setting up direct deposit, bill pay, or wire transfers, make sure to use the routing number assigned to your specific branch or account — using the wrong one can delay or reject your transaction.

Your routing number appears on the bottom-left of any MUFG Union Bank check, in the MUFG Union Bank mobile app under account details, or by calling MUFG Union Bank at 800-538-9406. For ACH transfers like direct deposits and bill payments, use your state-specific routing number. For domestic wire transfers, MUFG Union Bank may use a different number — always confirm with the bank before sending a wire.

The reason MUFG Union Bank has multiple routing numbers in California is typically due to historical mergers and acquisitions. When banks merge, the acquired institution's routing numbers are often preserved so existing customers don't need to update their direct deposits, autopayments, and vendor relationships. Each routing number is tied to a specific Federal Reserve processing center.

All MUFG Union Bank routing numbers in California can be used for ACH transactions, direct deposits, and electronic payments. They are processed through the Federal Reserve and are verified using the standard ABA checksum algorithm.