SHAMROCK BANK, NA Routing Numbers in OK — Select City

SHAMROCK BANK, NA Routing Numbers in OK — Complete City Directory

SHAMROCK BANK, NA has 2 routing numbers across 1 city in OK, registered with the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. BankZop's SHAMROCK BANK, NA OK routing number directory is sourced directly from official ABA records and updated regularly — making it the most reliable reference for accurate routing numbers in OK.

Whether you are setting up direct deposit to a SHAMROCK BANK, NA account in OK, registering for ACH bill payments, or initiating a domestic wire transfer, you need the specific routing number for the city where your account was opened. Select your city above to navigate directly to the correct routing number.

How to Find Your SHAMROCK BANK, NA Routing Number in OK

• Step 1 — Select City: You are on the OK page. Choose your city from the list above. Use the search box to filter if needed.
• Step 2 — Select Routing Number: The city page lists all SHAMROCK BANK, NA routing numbers for that location. Click the one that applies to your account.
• Step 3 — Copy: The result page shows the 9-digit routing number with a one-click Copy button, plus the bank name, address, city, state, ZIP, and phone number.

Alternatively, the SHAMROCK BANK, NA routing number for your OK account is printed at the bottom-left of any personal check — it is always the first 9-digit sequence in the MICR line at the bottom of the check. You can also find it in your SHAMROCK BANK, NA online banking under Account Details.

Why SHAMROCK BANK, NA May Have Multiple Routing Numbers in OK

Large US banks like SHAMROCK BANK, NA historically assigned routing numbers by Federal Reserve processing centre rather than purely by state. As a result, SHAMROCK BANK, NA may have different routing numbers for different cities or regions within OK. Your routing number depends on which Federal Reserve office processed accounts when your branch was established — not necessarily your current ZIP code. This is why selecting your specific city is important when looking up the correct SHAMROCK BANK, NA routing number in OK.

When You Need the SHAMROCK BANK, NA OK Routing Number

Direct Deposit Setup

When setting up payroll direct deposit, IRS tax refunds, Social Security benefits, or any government payment to your SHAMROCK BANK, NA account in OK, you provide the routing number alongside your account number. Use the city-specific routing number from BankZop — the one assigned to the location where your SHAMROCK BANK, NA account was originally opened.

ACH Transfers and Bill Payments

ACH is the primary mechanism for electronic payments in the US — covering recurring bill payments, subscription debits, online banking transfers, and same-day payments. The NACHA network uses the routing number to route credits and debits to the correct financial institution. Standard ACH settles in 1–2 business days; Same Day ACH settles same-day for eligible transactions submitted before the cut-off.

Domestic Wire Transfers

Domestic wires settle in real time through the Federal Reserve's Fedwire system on the same business day. Important: SHAMROCK BANK, NA may use a different routing number for wires than for ACH. Always confirm the correct wire routing number with SHAMROCK BANK, NA's wire department before initiating a wire transfer from a OK account. For international wires, a SWIFT/BIC code is required — not the routing number. Find it at BankZop's SWIFT Code Lookup.

SHAMROCK BANK, NA Routing Number vs Account Number in OK

Cities in OK with SHAMROCK BANK, NA Routing Numbers

SHAMROCK BANK, NA operates in 1 city across OK with ABA-registered routing numbers. Click any city to browse routing numbers directly:

Routing number counts reflect active ABA records as of Jun 2026. Data sourced from the Federal Reserve E-Payments Routing Directory.

To browse SHAMROCK BANK, NA routing numbers in other states, visit the SHAMROCK BANK, NA routing number directory. For all US banks, use the Routing Number Lookup homepage. For international transfers, use the SWIFT Code Lookup. For Indian bank transfers, use the IFSC Code Lookup.