BANK 1ST Routing Number in WEST UNION, IA
1 BANK 1ST routing number found in WEST UNION, IA. Click any routing number to view full details — for ACH transfers, direct deposits, and wire payments.
BANK 1ST — WEST UNION, IA — Select Routing Number
1 routing number
BANK 1ST Routing Number in WEST UNION, IA
BANK 1ST has 1 routing number registered in WEST UNION, IA with the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. Each 9-digit routing number uniquely identifies BANK 1ST's WEST UNION processing location within the US payment network. BankZop sources all routing data directly from official ABA records — click any routing number above to view its full details and copy it instantly.
The BANK 1ST routing number for WEST UNION, IA is used for setting up direct deposits, authorising ACH payments, initiating domestic wire transfers, and check processing. Always use the specific routing number assigned to the location where your account was opened.
What to Do After Finding the BANK 1ST WEST UNION Routing Number
- Direct deposit: Provide the 9-digit routing number along with your account number to your employer's payroll system, the IRS (for tax refunds), or any government benefit agency.
- ACH bill payment: Enter the routing number when setting up electronic payments to utilities, insurance providers, or subscription services that debit your BANK 1ST account.
- Wire transfer: Confirm with BANK 1ST's wire department whether this ABA routing number applies to wire transfers — many banks use a different wire routing number.
- Check verification: Cross-check the routing number printed at the bottom-left of your BANK 1ST check against the number shown here to confirm accuracy.
Why BANK 1ST May Have This Routing Number in WEST UNION
BANK 1ST uses a single routing number for WEST UNION, IA — assigned by the ABA to identify this specific BANK 1ST processing location within the Federal Reserve's payment system. This 9-digit code is what routes ACH debits, credits, and wire transfers to the correct BANK 1ST office for settlement.
ACH vs Wire Transfer — Which Routing Number to Use
This is one of the most common questions about BANK 1ST WEST UNION routing numbers:
| Transfer Type | Routing Number | Settlement |
|---|---|---|
| Direct Deposit / ACH | ABA routing number (this page) | 1–2 business days (same day for Same Day ACH) |
| Domestic Wire Transfer | Confirm with BANK 1ST directly — may differ | Same business day (real-time via Fedwire) |
| International Wire | SWIFT/BIC code required — find it here | 1–5 business days |
About BANK 1ST in WEST UNION, IA
BANK 1ST serves customers in WEST UNION, IA through its local banking network. The routing number listed on this page are the ABA-registered identifier for BANK 1ST's WEST UNION operations — used by the Federal Reserve's payment infrastructure to route ACH and wire transactions to the correct financial institution.
To browse BANK 1ST routing numbers in other cities in IA, visit the BANK 1ST IA directory. For all BANK 1ST states, see the BANK 1ST routing number directory. For international transfers, use the SWIFT Code Lookup. For Indian bank transfers, use the IFSC Code Lookup.
Data sourced from the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. Last reviewed Jun 2026 by BankZop Editorial Team.
Frequently Asked Questions — BANK 1ST Routing Numbers in WEST UNION
- Direct deposit — payroll, IRS tax refunds, Social Security, VA benefits
- ACH transfers — online bill payments, electronic debits, bank transfers
- Domestic wire transfers — same-day settlement via Fedwire (may use a separate wire routing number)
- Check payments — printed at the bottom-left of every BANK 1ST personal check
- ACH debit authorisations — recurring payments to utilities, subscriptions, insurance