FIRSTBANK Routing Number 102101519 — LAKEWOOD, CO

The ABA routing number 102101519 belongs to FIRSTBANK in LAKEWOOD, CO. Use for ACH transfers, direct deposits, and check payments.

Updated Jun 2026 FIRSTBANK LAKEWOOD ABA Verified
FIRSTBANK
CO
LAKEWOOD
102101519
Result
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FIRSTBANK

LAKEWOOD, CO 80215

ABA Verified

ABA Routing Number

102101519

Routing Number Breakdown

1021 Fed Symbol
·
0151 Institution
·
9 Check Digit
State CO
ZIP Code 80215
Phone (303) 235-1446
Address 12345 WEST COLFAX AVENUE, LAKEWOOD, CO 80215
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About Routing Number 102101519 — FIRSTBANK

Routing number 102101519 is the official 9-digit ABA routing number registered to FIRSTBANK at 12345 WEST COLFAX AVENUE, LAKEWOOD, CO 80215. 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 102101519

The 9-digit number 102101519 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 FIRSTBANK's transactions. 0151 is the ABA institution identifier — four digits assigned by the American Bankers Association uniquely to FIRSTBANK. 9 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 102101519

  • Direct Deposit — Payroll and Government Payments: Provide routing number 102101519 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 102101519 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 FIRSTBANK personal check in LAKEWOOD — the first 9-digit sequence in the MICR line.
  • Domestic Wire Transfers via Fedwire: Confirm with FIRSTBANK whether 102101519 applies to wires — many banks use a separate wire routing number. Fedwire settles same-day in real time.

What 102101519 Cannot Be Used For

  • International wire transfers — require a SWIFT/BIC code. Find FIRSTBANK'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 102101519 Is Correct

Before using 102101519 for a large ACH or wire transfer, verify it three ways: (1) Check the bottom-left of a FIRSTBANK personal check — the routing number must match. (2) Log into FIRSTBANK 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 FIRSTBANK 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.

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Frequently Asked Questions — Routing Number 102101519