FIRST MIDWEST BANK Routing Number 271973775 — ITASCA, IL
The ABA routing number 271973775 belongs to FIRST MIDWEST BANK in ITASCA, IL. Use for ACH transfers, direct deposits, and check payments.
FIRST MIDWEST BANK
ITASCA, IL 60143
ABA Routing Number
271973775
Routing Number Breakdown
About Routing Number 271973775 — FIRST MIDWEST BANK
Routing number 271973775 is the official 9-digit ABA routing number registered to FIRST MIDWEST BANK at SUITE 1500, ITASCA, IL 60143. 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 271973775
The 9-digit number 271973775 is structured in three segments: 2719 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 FIRST MIDWEST BANK's transactions. 7377 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to FIRST MIDWEST BANK. 5 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 271973775
- Direct Deposit — Payroll and Government Payments: Provide routing number 271973775 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 271973775 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 FIRST MIDWEST BANK personal check in ITASCA — the first 9-digit sequence in the MICR line.
- Domestic Wire Transfers via Fedwire: Confirm with FIRST MIDWEST BANK whether 271973775 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.
What 271973775 Cannot Be Used For
- International wire transfers — require a SWIFT/BIC code. Find FIRST MIDWEST BANK'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 271973775 Is Correct
Before using 271973775 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a FIRST MIDWEST BANK personal check — the routing number must match. (2) Log into FIRST MIDWEST BANK 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 FIRST MIDWEST BANK 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.
Frequently Asked Questions — Routing Number 271973775
- Direct deposit — payroll, IRS tax refunds, Social Security, VA benefits to a FIRST MIDWEST BANK account
- ACH transfers — online bill payments, electronic debits, bank-to-bank transfers
- Check payments — this routing number is printed at the bottom-left of every FIRST MIDWEST BANK personal check
- ACH debit authorisations — recurring payments to utilities, subscriptions, and insurance providers
