FDIC-insured bank
Newtown Savings Bank — Newtown, CT
Bank headquartered in Newtown, Connecticut, part of NSB MUTUAL HOLDING CO.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Headquarters and contact
| Address | 39 Main St Newtown, CT 06470 |
| County | Western Connecticut |
| Website | www.nsbonline.com |
| Phone | not published in FDIC data, see the bank's website |
FDIC record
| FDIC Certificate | 18199 |
| Federal Reserve RSSD ID | 507509 |
| Status | Active |
| Charter class | SI (STATE) |
| Holding company | NSB MUTUAL HOLDING CO |
| Domestic offices | 19 |
| Financials as of | June 30, 2026 |
How to find your Newtown Savings Bank routing number
FDIC does not publish ABA routing numbers, and many banks use different routing numbers by state or by account type. The reliable places to find yours: the bottom left of a check from this bank, the "account details" screen in its online banking, or its official website at www.nsbonline.com.
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Offices nearest to headquarters
| Newtown Savings Bank main office Newtown, CT |
39 Main St, 06470 |
| Nsb Mobile Branch Newtown, CT |
39 Main St, 06470 |
| Newtown Branch Newtown, CT |
32 Church Hill Rd, 06470 |
| Newtown High School Branch Sandy Hook, CT |
12 Berkshire Rd, 06482 |
| Plaza South Branch Newtown, CT |
274 S Main St, 06470 |
| Stony Hill Road Branch Bethel, CT |
66 Stony Hill Rd, 06801 |
| Southbury Branch Southbury, CT |
685 Main St S, 06488 |
| Clock Tower Plaza Branch Monroe, CT |
477 Main St, 06468 |
| Bethel Branch Bethel, CT |
211 Greenwood Ave, 06801 |
| Pomperaug Woods Branch Southbury, CT |
80 Heritage Rd, 06488 |
| Century Plaza Shpg. Center Branch Monroe, CT |
535 Monroe Tpke, 06468 |
| Brookfield Branch Brookfield, CT |
14 Candlewood Hbr, 06804 |
19 offices in total. Browse them by city through the state pages.
Where Newtown Savings Bank has offices
Cities with the most Newtown Savings Bank offices
Largest banks headquartered elsewhere in Connecticut
| Liberty Bank Middletown | $9.38 billion |
| Bankwell Bank New Canaan | $3.47 billion |
| Union Savings Bank Danbury | $3.30 billion |
| Ion Bank Naugatuck | $2.78 billion |
| First County Bank Stamford | $2.42 billion |
| Thomaston Savings Bank Thomaston | $1.93 billion |
| Fairfield County Bank Ridgefield | $1.92 billion |
| Chelsea Groton Bank Groton | $1.75 billion |
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