GRAND MOUNTAIN BANK, FSB Routing Number 102189612 — GRANBY, CO
The ABA routing number 102189612 belongs to GRAND MOUNTAIN BANK, FSB in GRANBY, CO. Use for ACH transfers, direct deposits, and check payments.
GRAND MOUNTAIN BANK, FSB
GRANBY, CO 80446
ABA Routing Number
102189612
Routing Number Breakdown
About Routing Number 102189612 — GRAND MOUNTAIN BANK, FSB
Routing number 102189612 is the official 9-digit ABA routing number registered to GRAND MOUNTAIN BANK, FSB at 337 E AGATE AVE, GRANBY, CO 80446. 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 102189612
The 9-digit number 102189612 is structured in three segments: 1021 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 GRAND MOUNTAIN BANK, FSB's transactions. 8961 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to GRAND MOUNTAIN BANK, FSB. 2 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 102189612
- Direct Deposit — Payroll and Government Payments: Provide routing number 102189612 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 102189612 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 GRAND MOUNTAIN BANK, FSB personal check in GRANBY — the first 9-digit sequence in the MICR line.
- Domestic Wire Transfers via Fedwire: Confirm with GRAND MOUNTAIN BANK, FSB whether 102189612 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.
What 102189612 Cannot Be Used For
- International wire transfers — require a SWIFT/BIC code. Find GRAND MOUNTAIN BANK, FSB'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 102189612 Is Correct
Before using 102189612 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a GRAND MOUNTAIN BANK, FSB personal check — the routing number must match. (2) Log into GRAND MOUNTAIN BANK, FSB 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 GRAND MOUNTAIN BANK, FSB routing numbers in CO 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 102189612
- Direct deposit — payroll, IRS tax refunds, Social Security, VA benefits to a GRAND MOUNTAIN BANK, FSB 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 GRAND MOUNTAIN BANK, FSB personal check
- ACH debit authorisations — recurring payments to utilities, subscriptions, and insurance providers
