ION BANK Routing Numbers in CT — Select City

ION BANK Routing Numbers in CT — Complete City Directory

ION BANK has 1 routing number across 1 city in CT, registered with the American Bankers Association (ABA) and the Federal Reserve E-Payments Routing Directory. BankZop's ION BANK CT routing number directory is sourced directly from official ABA records and updated regularly — making it the most reliable reference for accurate routing numbers in CT.

Whether you are setting up direct deposit to a ION BANK account in CT, registering for ACH bill payments, or initiating a domestic wire transfer, you need the specific routing number for the city where your account was opened. Select your city above to navigate directly to the correct routing number.

How to Find Your ION BANK Routing Number in CT

• Step 1 — Select City: You are on the CT page. Choose your city from the list above. Use the search box to filter if needed.
• Step 2 — Select Routing Number: The city page lists all ION BANK routing numbers for that location. Click the one that applies to your account.
• Step 3 — Copy: The result page shows the 9-digit routing number with a one-click Copy button, plus the bank name, address, city, state, ZIP, and phone number.

Alternatively, the ION BANK routing number for your CT account is printed at the bottom-left of any personal check — it is always the first 9-digit sequence in the MICR line at the bottom of the check. You can also find it in your ION BANK online banking under Account Details.

Why ION BANK May Have Multiple Routing Numbers in CT

Large US banks like ION BANK historically assigned routing numbers by Federal Reserve processing centre rather than purely by state. As a result, ION BANK may have different routing numbers for different cities or regions within CT. Your routing number depends on which Federal Reserve office processed accounts when your branch was established — not necessarily your current ZIP code. This is why selecting your specific city is important when looking up the correct ION BANK routing number in CT.

When You Need the ION BANK CT Routing Number

Direct Deposit Setup

When setting up payroll direct deposit, IRS tax refunds, Social Security benefits, or any government payment to your ION BANK account in CT, you provide the routing number alongside your account number. Use the city-specific routing number from BankZop — the one assigned to the location where your ION BANK account was originally opened.

ACH Transfers and Bill Payments

ACH is the primary mechanism for electronic payments in the US — covering recurring bill payments, subscription debits, online banking transfers, and same-day payments. The NACHA network uses the routing number to route credits and debits to the correct financial institution. Standard ACH settles in 1–2 business days; Same Day ACH settles same-day for eligible transactions submitted before the cut-off.

Domestic Wire Transfers

Domestic wires settle in real time through the Federal Reserve's Fedwire system on the same business day. Important: ION BANK may use a different routing number for wires than for ACH. Always confirm the correct wire routing number with ION BANK's wire department before initiating a wire transfer from a CT account. For international wires, a SWIFT/BIC code is required — not the routing number. Find it at BankZop's SWIFT Code Lookup.

ION BANK Routing Number vs Account Number in CT

Cities in CT with ION BANK Routing Numbers

ION BANK operates in 1 city across CT with ABA-registered routing numbers. Click any city to browse routing numbers directly:

Routing number counts reflect active ABA records as of Jun 2026. Data sourced from the Federal Reserve E-Payments Routing Directory.

To browse ION BANK routing numbers in other states, visit the ION BANK routing number directory. For all US banks, use the Routing Number Lookup homepage. For international transfers, use the SWIFT Code Lookup. For Indian bank transfers, use the IFSC Code Lookup.