1ST STATE BK Routing Number 081220508 — OLMSTED, IL

The ABA routing number 081220508 belongs to 1ST STATE BK in OLMSTED, IL. Use for ACH transfers, direct deposits, and check payments.

Updated Jun 2026 1ST STATE BK OLMSTED ABA Verified
1ST STATE…
IL
OLMSTED
081220508
Result
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1ST STATE BK

OLMSTED, IL 62970

ABA Verified

ABA Routing Number

081220508

Routing Number Breakdown

0812 Fed Symbol
·
2050 Institution
·
8 Check Digit
State IL
ZIP Code 62970
Phone (618) 742-6205
Address PO BOX 98, OLMSTED, IL 62970
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About Routing Number 081220508 — 1ST STATE BK

Routing number 081220508 is the official 9-digit ABA routing number registered to 1ST STATE BK at PO BOX 98, OLMSTED, IL 62970. It is registered with the American Bankers Association and the Federal Reserve E-Payments Routing Directory. This number is used exclusively within the US domestic payment system — for ACH transfers, direct deposits, check processing, and domestic wire transfers routed through Fedwire. It cannot be used for international transfers, which require a SWIFT/BIC code.

How to Read Routing Number 081220508

The 9-digit number 081220508 is structured in three segments: 0812 is the Federal Reserve routing symbol — the first two digits identify the Federal Reserve district and the next two identify the specific Federal Reserve processing office handling 1ST STATE BK's transactions. 2050 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to 1ST STATE BK. 8 is the check digit — a single digit calculated from the first eight digits using a weighted sum formula (3-7-1 multipliers). Payment processing systems run this calculation in real time to catch routing number entry errors before any funds move.

ACH, Direct Deposit, and Wire — When to Use 081220508

  • Direct Deposit — Payroll and Government Payments: Provide routing number 081220508 and your account number to set up payroll direct deposit, IRS tax refunds, Social Security, VA benefits, or any recurring government payment.
  • ACH Transfers — Bill Payments and Bank Transfers: Enter 081220508 when authorising electronic debits or credits — utility bills, insurance premiums, subscription services, or bank-to-bank transfers via NACHA's ACH network.
  • Check Payments: This routing number is printed at the bottom-left of every 1ST STATE BK personal check in OLMSTED — the first 9-digit sequence in the MICR line.
  • Domestic Wire Transfers via Fedwire: Confirm with 1ST STATE BK whether 081220508 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.

What 081220508 Cannot Be Used For

  • International wire transfers — require a SWIFT/BIC code. Find 1ST STATE BK's SWIFT code at the SWIFT Code Lookup.
  • Indian bank transfers (NEFT, RTGS, IMPS, UPI) — require an IFSC code. Use the IFSC Code Lookup.
  • Cheque clearing in India — requires a MICR code. Use the MICR Code Lookup.

How to Verify Routing Number 081220508 Is Correct

Before using 081220508 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a 1ST STATE BK personal check — the routing number must match. (2) Log into 1ST STATE BK online banking under Account Details. (3) Cross-check against the Federal Reserve routing directory. BankZop sources all routing data from official ABA and Federal Reserve records as of Jun 2026.

Browse more 1ST STATE BK routing numbers in IL or across all states. For all US banks, visit the Routing Number Lookup. For international transfers, use the SWIFT Code Lookup. For loan EMI planning, try the EMI Calculator.

Data sourced from the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. Last reviewed Jun 2026 by BankZop Editorial Team.

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Frequently Asked Questions — Routing Number 081220508