321 173 182 works for direct deposit, ACH, and domestic wires. (cross-checked against public directories, not confirmed by the bank)
321173182
Direct deposit, payroll, ACH transfers, and domestic wires.
1 number · 1 cross-checked
| Routing number | Use | State | Verification | Checked | Copy |
|---|---|---|---|---|---|
| 321 173 182Cross-checked | ACH · Wire | CAACH · Wire | Cross-checked | June 28, 2026 |
Where to look: a check, online banking, the mobile app.
Look at the bottom-left of a 1ST Northern California check — the first 9 digits are your routing number.
Or sign in to online or mobile banking and open your account or routing details.
Or call the number on the back of your card and ask for the ABA routing number for your account.
Confirm the number with the bank before using it for direct deposit or a transfer.
321 173 182 works for direct deposit, ACH, and domestic wires. (cross-checked against public directories, not confirmed by the bank) The 9-digit routing number identifies the bank on a transfer; your account number identifies you.
Your routing number is the first 9 digits in the bottom-left of a 1ST Northern California check, or in your online and mobile banking under account or routing details. You can also call the number on the back of your card. If anyone asks for your online-banking password or full card number to "verify" a routing number, it's a scam — a routing number alone is public.
1ST Northern California is a credit union headquartered in Martinez, CA.
Every number passes the standard ABA checksum. 1 is cross-checked against multiple public routing directories. fin.codes is an independent reference, not a bank — always confirm transfer details with 1ST Northern California before sending money.
No. fin.codes is an independent reference and is not affiliated with, authorized by, or endorsed by 1ST Northern California.
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