Ion Bank
Naugatuck, CT
IDRSSD: 407506
Total Assets
$2.73B
Latest filing
Total Deposits
$2.23B
Latest filing
Net Interest Margin
4.21%
Profitability
Routing numbers
Primary routing transit numbers associated with this institution.
1 routeView all→
211174178NAUGATUCK, CT
Key People
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Locations
Main office and branches. Select to view on the map.
Main Office
Ion Bank
87 Church St
Naugatuck, CT 06770
Full Service - Brick and Mortar
Updated 01/30/2026Established 01/01/1870FDIC Certificate 12118
Branches (36)
Page 1 of 6| Name | Address | City / State |
|---|---|---|
| Ion Bank (Main) | 87 Church St | Naugatuck, CT |
| OXFORD BRANCH | 71 Oxford Rd | Oxford, CT |
| MIDDLEBURY BRANCH | 600 Middlebury Rd | Middlebury, CT |
| WOODBURY BRANCH | 670 Main St N | Woodbury, CT |
| CHESHIRE BRANCH | 218 Maple Ave | Cheshire, CT |
| TENAFLY BRANCH | 80 County Rd | Tenafly, NJ |
| CRESSKILL BRANCH | 189 County Rd | Cresskill, NJ |
| LEONIA BRANCH | 310 Broad Ave | Leonia, NJ |
Showing 7 of 36
Quarterly Trends
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Total Assets vs Total Liabilities
Loans & Leases vs Deposits
Interest Income vs Expense
Net Interest Income
Noninterest Expense vs Income
Net Income
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Institution Profile
| Institution Class | Commercial bank, state charter, Fed member, supervised by FRB |
| Primary Regulator | FED |
| Established Date | 01/01/1870 |
| Community Bank | No |
| Ownership Type | Not Mutual |
| ZIP | 06770 |
| State and County Number | 09140 |
| Subchapter S Corporations | No |
| Trust Powers | Full Trust Powers Granted |
| Federal Reserve ID Number | 01 |
| Numeric code | 13 |
| Insured by FDIC | Institutions that are currently open and insured by the FDIC |
| Federal Reserve District | New York |
| Core Based Statistical Area Name | N/A |
Operational Info
| Number of Employees | 381 |
| Domestic Offices | 37 |
| Foreign Offices | 0 |
| US Offices | 0 |
| Directly owned by another bank (CERT) | No |
| Last Structure Change Effective Date | 11/01/2025 |
| Date of Deposit Insurance | 07/01/1960 |
| Primary Insurance Agency | DIF |
| Website | www.ionbank.com |
| Data Updated | 01/30/2026 |
| CERT | 18198 |
| Office of The Comptroller District: | — |
| Office of Thrift Supervision Region | N/A |
Financial Summary
| Total Assets | $2.73B |
| Total Deposits | $2.23B |
| Total Liabilities | $2.40B |
| Total Equity Capital | $329.90M |
| Net Income | $-977,000 |
| Net Loans and Leases | $2.03B |
| Assets Per Employee ($Millions) | $6.86M |
| Bank Premises and Fixed Assets | $52.06M |
| Cash and Balances due from Depository Institutions | $233.04M |
| Deposits Held in Domestic Offices | $2.23B |
Key Performance Ratios
| Return on Assets (ROA) | -0.14% |
| Return on Equity (ROE) | -1.15% |
| Net Interest Margin | 4.21% |
| Efficiency Ratio | 95.93% |
| Tier 1 Risk-Based Capital Ratio | 14.869% |
| Net Loans and Leases to Core Deposits | 0% |
| Credit Loss Provision to Assets | 0.22% |
| Cash Dividends to Net Income (YTD Only) | 0% |
| Equity Capital to Assets | 12.075% |
| Earning Assets to total Assets | 91.19% |
Income and Expense
| Total Interest Income | $35.23M |
| Total Noninterest Income | $4.19M |
| Total Interest Expense | $8.83M |
| Total Noninterest Expense | $29.94M |
| Net Interest Income | $26.39M |
| Pre-tax Net Operating Income | $-851,000 |
| Provision for Credit Losses | $1.50M |
| Discontinued Operations (Extraordinary Gains - Net) | $0 |
Additional Financial Info
| Goodwill and Other Intangibles | $0 |
| All Other Assets | — |
| Other Real Estate Owned | $3.56M |
| Other borrowed funds | $84.61M |
| Federal Funds Sold & Reverse Repurchase Agreement | $0 |
| Federal Funds Purchased and Repurchased Agreement | $0 |
| All Other Liabilities | $74.94M |
| Total Liabilities and Capital | $2.73B |
Securities
| Securities | $246.34M |
| Available-for-sale debt securities | $246.34M |
| Equity securities with readily determinable fair values not held for trading | — |
| Held-to-maturity securities | $0 |
| Subordinated Debt | $0 |
| Trading Account Assets | $11.43M |
| Trading Liabilities | $11.43M |
Frequently Asked Questions
What are the total assets of Ion Bank?
$2.73B as of the latest filing.
How much are Ion Bank's total deposits?
$2.23B in total deposits.
Where is Ion Bank located?
Naugatuck, CT.
What is the Net Interest Margin?
4.21%.
How many domestic offices does it operate?
37.
When was it established?
01/01/1870.
What is the Return on Assets (ROA)?
-0.14%.
How much are total loans and leases?
$2.03B (latest filing).
What is the total interest income (latest filing)?
$35.23M.