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Profitability · Connecticut

US Banks with Highest Net Interest Margin (NIM) in Connecticut

Ranked among banks headquartered in Connecticut. Re-ranked 1-28 within the state from the same national ranking population.

#1 Net Interest Margin (NIM): DR BANK — 5.09% . Net Interest Margin (NIM) measures the spread between interest earned on assets and interest paid on liabilities — the core unit economics of a commercial bank.

Ranked: 28 banks with reported data Showing: Top 28 Source: FFIEC call reports (Q1 2026) What is this metric? See the US Banks with … glossary entry Go deeper: What Is Net Interest Margin? A Bank Profitability Guide
# Bank HQ US Banks with … Total Assets
1 Dr Bank Darien , CT 5.09% $860.7M
2 Jewett City Savings Bank Jewett City , CT 4.25% $484.4M
3 Connecticut Community Bank, N.A. Norwalk , CT 4.16% $533.4M
4 Ion Bank Naugatuck , CT 4.07% $2.77B
5 Chelsea Groton Bank Norwich , CT 3.73% $1.74B
6 Essex Bank Essex , CT 3.65% $525.7M
7 Windsor Federal Bank Windsor , CT 3.61% $882.1M
8 Fairfield County Bank Ridgefield , CT 3.45% $1.89B
9 Milford Bank the Milford , CT 3.44% $652.7M
10 Ives Bank Danbury , CT 3.42% $1.69B
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11 Bankwell Bank New Canaan , CT 3.41% $3.36B
12 Ascend Bank Guilford , CT 3.39% $1.47B
13 Liberty Bank Middletown , CT 3.37% $9.02B
14 Webster Bank, N.A. Stamford , CT 3.30% $85.53B
15 Thomaston Savings Bank Thomaston , CT 3.28% $1.91B
16 Dime Bank Norwich , CT 3.22% $1.22B
17 Newtown Savings Bank Newtown , CT 3.20% $1.93B
18 New Haven Bank New Haven , CT 3.15% $198.2M
19 Torrington Savings Bank, the Torrington , CT 3.09% $994.0M
20 National Iron Bank, the Salisbury , CT 2.99% $319.5M
21 First Bank of Greenwich, the Cos Cob , CT 2.97% $806.8M
22 Union Savings Bank Danbury , CT 2.93% $3.30B
23 Northwest Community Bank Winsted , CT 2.92% $1.23B
24 Eastern Connecticut Savings Bank Norwich , CT 2.92% $262.6M
25 Patriot Bank, N.A. Stamford , CT 2.54% $1.18B
26 First County Bank Stamford , CT 2.39% $2.36B
27 Stafford Savings Bank Stafford Springs , CT 2.31% $507.6M
28 Fieldpoint Private Bank & Trust Greenwich , CT 2.04% $943.6M

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All data sourced from the most recent FFIEC call report filings, refreshed each quarter as new filings are processed. This leaderboard excludes banks with total assets under $100,000K to filter out anomalous micro-bank ratios. See /data-updates/ for the current data freshness window.

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