Ion Bank is a state-chartered bank (fed member) headquartered in Naugatuck, Connecticut, in business for about 156 years. At the end of Q2 2026 it reported $2.8B in total assets and $2.3B in deposits, with 37 offices across 2 states.
Ion Bank has a TellerScore of 62 out of 100 (moderate) based on Q2 2026 data — higher than only 27% of its 897 banks with $1 billion – $10 billion. Among 27 banks headquartered in Connecticut, it ranks 19th. Problem-loan coverage contributes the most (80/100, 9.8%); loan quality contributes the least (50/100, 1.49%).
TellerScore · Q2 2026
Scorecard
The TellerScore is our own summary of the figures this institution reports publicly; it is not issued or endorsed by any government agency. It is not a prediction, and deposits within insurance limits are protected either way.
9 quarters
Health trend
From Q2 2025 to Q2 2026, the score fell 12 points (74 → 62), mostly because the loan quality component weakened by 26 points.
Show as table
| Quarter | TellerScore |
|---|---|
| Q2 2024 | 66 |
| Q3 2024 | 65 |
| Q4 2024 | 65 |
| Q1 2025 | 68 |
| Q2 2025 | 74 |
| Q3 2025 | 72 |
| Q4 2025 | 66 |
| Q1 2026 | 65 |
| Q2 2026 | 62 |
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| Quarter | Tier 1 leverage ratio |
|---|---|
| Q2 2024 | 9.67% |
| Q3 2024 | 9.64% |
| Q4 2024 | 10.00% |
| Q1 2025 | 10.00% |
| Q2 2025 | 12.63% |
| Q3 2025 | 11.91% |
| Q4 2025 | 11.36% |
| Q1 2026 | 11.60% |
| Q2 2026 | 11.91% |
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| Quarter | Noncurrent loans |
|---|---|
| Q2 2024 | 0.31% |
| Q3 2024 | 0.36% |
| Q4 2024 | 0.32% |
| Q1 2025 | 0.33% |
| Q2 2025 | 0.72% |
| Q3 2025 | 0.59% |
| Q4 2025 | 0.87% |
| Q1 2026 | 1.01% |
| Q2 2026 | 1.49% |
Show as table
| Quarter | Return on assets |
|---|---|
| Q2 2024 | 0.70% |
| Q3 2024 | 0.78% |
| Q4 2024 | 0.71% |
| Q1 2025 | 1.02% |
| Q2 2025 | 1.19% |
| Q3 2025 | 1.13% |
| Q4 2025 | 0.79% |
| Q1 2026 | 0.85% |
| Q2 2026 | 0.93% |
| Quarter | Score | Assets | Capital | Problem loans | ROA | Loans/deposits |
|---|---|---|---|---|---|---|
| Q2 2026 | 62 | $2.8B | 11.91% | 1.49% | 0.93% | 87.3% |
| Q1 2026 | 65 | $2.8B | 11.60% | 1.01% | 0.85% | 89.8% |
| Q4 2025 | 66 | $2.7B | 11.36% | 0.87% | 0.79% | 91.0% |
| Q3 2025 | 72 | $2.8B | 11.91% | 0.59% | 1.13% | 90.2% |
| Q2 2025 | 74 | $2.8B | 12.63% | 0.72% | 1.19% | 88.1% |
| Q1 2025 | 68 | $2.2B | 10.00% | 0.33% | 1.02% | 89.3% |
| Q4 2024 | 65 | $2.1B | 10.00% | 0.32% | 0.71% | 89.7% |
| Q3 2024 | 65 | $2.1B | 9.64% | 0.36% | 0.78% | 87.6% |
| Q2 2024 | 66 | $2.1B | 9.67% | 0.31% | 0.70% | 86.0% |
897 peers · $1 billion – $10 billion
How it compares with peers
Percentile against banks of similar size nationwide (100th = best among peers; for ratios where lower is better, the scale is flipped).
Similar-size banks in Connecticut
| Institution | Score | Assets | Capital | Problem loans | Compare |
|---|---|---|---|---|---|
| First County BankBank Stamford, CT | 61 out of 100, Moderate | $2.4B | 9.6% | 0.24% | vs |
| Union Savings BankBank Danbury, CT | 71 out of 100, Strong | $3.3B | 11.5% | 0.29% | vs |
| Bankwell BankBank New Canaan, CT | 68 out of 100, Moderate | $3.5B | 10.4% | 0.54% | vs |
| Thomaston Savings BankBank Thomaston, CT | 68 out of 100, Moderate | $1.9B | 10.7% | 0.65% | vs |
| Fairfield County BankBank Ridgefield, CT | 76 out of 100, Strong | $1.9B | 14.3% | 0.05% | vs |
| Newtown Savings BankBank Newtown, CT | 65 out of 100, Moderate | $1.9B | 9.5% | 0.37% | vs |
Deposit insurance
Is my money safe at Ion Bank?
Yes. Ion Bank is an FDIC-insured institution (FDIC certificate #18198). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category.
An estimated 21.7% of deposits ($494.3M) are above the $250,000 FDIC insurance limit, below the peer median of 31%. Insured balances are protected regardless of the score.
The tier 1 leverage ratio is 11.91%, well above the 5% level regulators use as the "well capitalized" benchmark for this measure. Its total risk-based capital ratio is 16.82% (benchmark: 10%).
37 locations
Branches
Ion Bank lists 32 offices in 28 cities across 2 states. Most locations:
- Meriden, CT (2)
- Naugatuck, CT (2)
- Teaneck, NJ (2)
- Waterbury, CT (2)
- Ansonia, CT (1)
- Bergenfield, NJ (1)
- Cheshire, CT (1)
- Closter, NJ (1)
- Cresskill, NJ (1)
- Englewood, NJ (1)
- Farmington, CT (1)
- Hamden, CT (1)
HMDA 2025
Mortgage lending
In 2025, Ion Bank reported 631 home-loan applications under HMDA (LEI 5493004D0Z2WQR26VL57): 450 originated ($122,770,000 total), 111 denied, and 67 withdrawn or closed by the applicant. Its denial rate on decided applications was 19.7%, compared with 22.2% for all lenders nationwide.
Denial rates depend heavily on loan type and applicant mix and are not a measure of fairness or of your own odds.
Identity & history
Profile
- Legal name
- Ion Bank
- Former names
- Naugatuck Savings Bank
- Type
- State-chartered bank (Fed member)
- FDIC certificate #
- 18198
- RSSD ID
- 407506
- Primary regulator
- FED
- Holding company
- Ion Financial Mhc Inc
- Established
- January 1, 1870
- Headquarters
- 251 Church St, Naugatuck, CT 06770
- Website
- www.ionbank.com
- Employees
- 371
Quick answers
Ion Bank: common questions
Is Ion Bank FDIC insured?
Yes. Ion Bank is an FDIC-insured institution (FDIC certificate #18198). Deposits are insured up to $250,000 per depositor, per insured bank, for each account ownership category.
What is Ion Bank's TellerScore?
62 out of 100 (Moderate), based on its Q2 2026 publicly reported figures. The TellerScore is our own summary and is not issued by any government agency.
Has Ion Bank ever failed?
There is no failure record for FDIC certificate #18198 in the FDIC failed bank list.
How many branches does Ion Bank have?
37 offices as of the latest FDIC data, in 2 states.
Nearby
Highest-scoring banks and credit unions with branches near Naugatuck
| Institution | Score | Assets | Capital | Problem loans | Compare |
|---|---|---|---|---|---|
| Waterbury Connecticut Teachers Federal Credit UnionCredit union Waterbury, CT | 91 out of 100, Very strong | $365.2M | 17.1% | 0.26% | vs |
| State Police Credit Union Inc.Credit union Meriden, CT | 91 out of 100, Very strong | $84.0M | 15.1% | 0.06% | vs |
| New Haven Teachers Federal Credit UnionCredit union New Haven, CT | 90 out of 100, Very strong | $10.2M | 32.0% | 0.13% | vs |
| New Haven Firefighters Credit UnionCredit union New Haven, CT | 89 out of 100, Very strong | $5.9M | 26.3% | 0.00% | vs |
| Bridgeport Police Federal Credit UnionCredit union Bridgeport, CT | 86 out of 100, Very strong | $29.6M | 18.7% | 1.65% | vs |
| Ct Firefighters Federal Credit UnionCredit union Hartford, CT | 85 out of 100, Very strong | $34.7M | 11.6% | 0.00% | vs |