SIMMONS FIRST NATL BK Routing Number ST LOUIS, MO

Q: How many routing numbers does SIMMONS FIRST NATL BK have in ST LOUIS, MO?

SIMMONS FIRST NATL BK has 1 routing number registered in ST LOUIS, MO with the American Bankers Association (ABA). Click any routing number above to view its complete details including bank name, address, ZIP code, and phone number.

Q: What is the SIMMONS FIRST NATL BK routing number in ST LOUIS, MO?

The SIMMONS FIRST NATL BK routing number in ST LOUIS, MO is shown above. Click it to view the full details page with a one-click Copy button. This 9-digit ABA routing number is used for ACH transfers, direct deposits, and check payments associated with SIMMONS FIRST NATL BK accounts in ST LOUIS.

Q: What is the SIMMONS FIRST NATL BK ST LOUIS routing number used for?

The SIMMONS FIRST NATL BK routing number in ST LOUIS is required for: Direct deposit — payroll, IRS tax refunds, Social Security, VA benefitsACH transfers — online bill payments, electronic debits, bank transfersDomestic wire transfers — same-day settlement via Fedwire (may use a separate wire routing number)Check payments — printed at the bottom-left of every SIMMONS FIRST NATL BK personal checkACH debit authorisations — recurring payments to utilities, subscriptions, insurance

Q: Is the SIMMONS FIRST NATL BK ST LOUIS routing number the same for ACH and wire transfers?

Not necessarily. Many large banks maintain a separate routing number for domestic wire transfers from the one used for ACH payments and direct deposits. If you need to send or receive a wire transfer to a SIMMONS FIRST NATL BK account in ST LOUIS, always confirm the wire routing number directly with SIMMONS FIRST NATL BK's wire department. The routing number shown on BankZop is the ABA routing number on record — verify wire-specific numbers with the bank before initiating high-value wire transactions.

Q: How do I verify the SIMMONS FIRST NATL BK routing number for ST LOUIS?

You can verify your SIMMONS FIRST NATL BK ST LOUIS routing number three ways: (1) Use BankZop — the result page shows the routing number with full bank address and phone. (2) Check the bottom-left of any SIMMONS FIRST NATL BK personal check — the routing number is always the first 9-digit sequence in the MICR line. (3) Log into SIMMONS FIRST NATL BK online banking and navigate to Account Details. All data on BankZop is sourced from the ABA routing registry.

Q: Can I use the SIMMONS FIRST NATL BK ST LOUIS routing number for international transfers?

No. ABA routing numbers only work within the US domestic payment system (ACH, Fedwire). For international wire transfers to or from a SIMMONS FIRST NATL BK account in ST LOUIS, you need the bank's SWIFT/BIC code instead. Visit BankZop's SWIFT Code Lookup to find the correct SWIFT code for SIMMONS FIRST NATL BK international transfers.

Q: What format is the SIMMONS FIRST NATL BK ST LOUIS routing number?

All SIMMONS FIRST NATL BK routing numbers in ST LOUIS follow the standard 9-digit ABA routing number format: digits 1–2 identify the Federal Reserve district; digits 3–4 identify the Federal Reserve office; digits 5–8 are the ABA institution identifier for SIMMONS FIRST NATL BK; digit 9 is a mathematically calculated check digit. A routing number is always exactly 9 numeric digits — any other format is invalid.

Q: Where is the SIMMONS FIRST NATL BK routing number on a check for ST LOUIS accounts?

The SIMMONS FIRST NATL BK routing number for ST LOUIS accounts is printed at the bottom-left of every personal check in the MICR line. It is always the first 9-digit sequence, surrounded by transit symbols. The account number follows in the centre (varies in length), and the check number is on the right. Do not confuse the routing number (9 digits, leftmost) with the account number.

SIMMONS FIRST NATL BK Routing Number in ST LOUIS, MO

1 SIMMONS FIRST NATL BK routing number found in ST LOUIS, MO. Click any routing number to view full details — for ACH transfers, direct deposits, and wire payments.

Updated Jun 2026 SIMMONS FIRST NATL BK ST LOUIS, MO Live Data

SIMMONS FIRST NATL BK Routing Number in ST LOUIS, MO

SIMMONS FIRST NATL BK has 1 routing number registered in ST LOUIS, MO with the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. Each 9-digit routing number uniquely identifies SIMMONS FIRST NATL BK's ST LOUIS 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 SIMMONS FIRST NATL BK routing number for ST LOUIS, MO 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 SIMMONS FIRST NATL BK ST LOUIS 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 SIMMONS FIRST NATL BK account.
Wire transfer: Confirm with SIMMONS FIRST NATL BK'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 SIMMONS FIRST NATL BK check against the number shown here to confirm accuracy.

Why SIMMONS FIRST NATL BK May Have This Routing Number in ST LOUIS

SIMMONS FIRST NATL BK uses a single routing number for ST LOUIS, MO — assigned by the ABA to identify this specific SIMMONS FIRST NATL BK 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 SIMMONS FIRST NATL BK office for settlement.

ACH vs Wire Transfer — Which Routing Number to Use

This is one of the most common questions about SIMMONS FIRST NATL BK ST LOUIS 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 SIMMONS FIRST NATL BK directly — may differ	Same business day (real-time via Fedwire)
International Wire	SWIFT/BIC code required — find it here	1–5 business days

About SIMMONS FIRST NATL BK in ST LOUIS, MO

SIMMONS FIRST NATL BK serves customers in ST LOUIS, MO through its local banking network. The routing number listed on this page are the ABA-registered identifier for SIMMONS FIRST NATL BK's ST LOUIS operations — used by the Federal Reserve's payment infrastructure to route ACH and wire transactions to the correct financial institution.

To browse SIMMONS FIRST NATL BK routing numbers in other cities in MO, visit the SIMMONS FIRST NATL BK MO directory. For all SIMMONS FIRST NATL BK states, see the SIMMONS FIRST NATL BK routing number directory. For international transfers, use the SWIFT Code Lookup. For Indian bank transfers, use the IFSC Code Lookup.

Frequently Asked Questions — SIMMONS FIRST NATL BK Routing Numbers in ST LOUIS

How many routing numbers does SIMMONS FIRST NATL BK have in ST LOUIS, MO?

What is the SIMMONS FIRST NATL BK routing number in ST LOUIS, MO?

What is the SIMMONS FIRST NATL BK ST LOUIS routing number used for?

Is the SIMMONS FIRST NATL BK ST LOUIS routing number the same for ACH and wire transfers?

How do I verify the SIMMONS FIRST NATL BK routing number for ST LOUIS?

Can I use the SIMMONS FIRST NATL BK ST LOUIS routing number for international transfers?

What format is the SIMMONS FIRST NATL BK ST LOUIS routing number?

Where is the SIMMONS FIRST NATL BK routing number on a check for ST LOUIS accounts?