Chelsea Groton Bank
Groton, Connecticut, Southeastern Connecticut County
$1.8B in total assets, the 674th largest of 4,309 US banks and 10th of 27 headquartered in Connecticut.
- FDIC certificate
- 18238
- Established
- 1854
- Owned by
- No holding company
- Primary regulator
- FDIC
- Website
- www.chelseagroton.com
At a glance
Compared with 14 banks headquartered in Connecticut with $1 billion to $10 billion in assets, as of June 30, 2026.
| Measure | This bank | Percentile | Peer range, middle 90% | Peer median |
|---|---|---|---|---|
| Total assets | $1.8B | 43% | $1.9B | |
| Loans | $1.3B | 36% | $1.5B | |
| Deposits | $1.2B | 21% | $1.5B | |
| Return on assets | 1.29% | 93% | 0.69% | |
| Net interest margin | 3.84% | 93% | 3.39% | |
| Efficiency ratio | 58.4% | 7% | 72.4% | |
| Equity to assets | 15.79% | 93% | 10.18% | |
| Loans to deposits | 111% | 98% | 98% |
Growth
Total assets grew 2.7% a year over the last 5 years and 5.7% a year over 10 years, without acquisitions.
Acquisitions
| Closed | Acquired bank | Assets at acquisition |
|---|---|---|
| May 1994 | Coastal Savings Bank, FSB New London, CT | n/a |
| Jul 1982 | The Chelsea Savings Bank Norwich, CT | n/a |
Where they operate
14 branches in 1 county.
Largest markets by deposits
| County | Deposits | Market share | Rank |
|---|---|---|---|
| Southeastern Connecticut County, CT | $1.2B | 17.9% | 1 of 14 |
Deposits by branch from the FDIC Summary of Deposits, June 2026. Rank among all banks with branches in that county.
Branch history since 2016
No net change since 2016 (14 branches then and now). 1 opened, 0 acquired, 1 closed or sold.
| Period | What happened | Opened or acquired | Closed or sold | Net change | Branches at end |
|---|---|---|---|---|---|
| Start of 2016 | Starting point | 14 | |||
| 2025 | Opened NorwichClosed Norwich | 1 | 1 | 0 | 14 |
Balance sheet and earnings
Loans by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| 1-4 family residential | 70% | 41% | |
| Commercial real estate | 12% | 32% | |
| Construction and land | 6% | 5% | |
| Business (C&I) | 6% | 9% | |
| Multifamily | 5% | 10% | |
| Consumer | 0% | 1% | |
| Other | 1% | 1% |
Deposits by type
| Type | Share | This bank | Peers |
|---|---|---|---|
| Other interest-bearing | 54% | 51% | |
| Noninterest-bearing | 37% | 22% | |
| Time deposits | 9% | 27% |
Brokered deposits are 0.0% of deposits (peers 3.8%).
Return on assets
Trailing four quarters, with the peer median.
Credit and capital
| This bank | Peer median | |
|---|---|---|
| Noncurrent loans | 0.48% | 0.43% |
| Net charge-offs, annualized | -0.00% | 0.01% |
| Reserves to loans | 0.93% | 1.01% |
| Leverage ratio | 16.73% | 11.08% |
Noncurrent loans exclude government-guaranteed portions.
Related banks
Similar size in Connecticut
Largest competitors in Southeastern Connecticut County, CT
Figures as of June 30, 2026 from the bank's Call Report, FDIC structure and branch data, and the Federal Reserve. Short link: bankingstats.com/chelsea-groton