Bank BranchesEvery insured bank office · FDIC · 1994–2026

Bank Branches › New York › Jefferson County

Banks in Jefferson County, New York

Jefferson County has 29 bank offices, 12 fewer than its peak of 41 in 1997 (−29%). They belong to 8 banks, led by Watertown Savings Bank with 10.

29
offices, 2026
41
peak (1997)
29
no longer reported
$2.2B
deposits booked

Map

open (29)no longer reported (26 of 29 have map coordinates)

The county's passbook

21411994: 38 offices, $943M1995: 40 offices, $962M1996: 40 offices, $937M1997: 41 offices, $940M1998: 40 offices, $959M1999: 39 offices, $947M2000: 37 offices, $980M2001: 37 offices, $1.0B2002: 37 offices, $1.0B2003: 38 offices, $1.1B2004: 38 offices, $1.0B2005: 38 offices, $1.1B2006: 38 offices, $1.1B2007: 36 offices, $1.2B2008: 37 offices, $1.4B2009: 38 offices, $1.5B2010: 40 offices, $1.5B2011: 40 offices, $1.6B2012: 40 offices, $1.4B2013: 39 offices, $1.4B2014: 37 offices, $1.4B2015: 37 offices, $1.5B2016: 36 offices, $1.6B2017: 36 offices, $1.6B2018: 35 offices, $1.6B2019: 34 offices, $1.6B2020: 35 offices, $1.9B2021: 32 offices, $2.2B2022: 31 offices, $2.1B2023: 34 offices, $2.0B2024: 32 offices, $2.0B2025: 30 offices, $2.1B2026: 29 offices, $2.2Bpeak 41 · 1997$2.2B1995200020052010201520202026
Bank offices reporting on June 30Deposits booked at them (nominal dollars, own scale)
Jefferson County1994–2026
DateofficesChangeDeposits
Jun 30 199438$943M
Jun 30 199540+2$962M
Jun 30 1997PEAK41+1$940M
Jun 30 200037−2$980M
Jun 30 200538·$1.1B
Jun 30 201040+2$1.5B
Jun 30 201537·$1.5B
Jun 30 202035+1$1.9B
Jun 30 202530−2$2.1B
Jun 30 2026NOW29−1$2.2B
Open the full passbook — all 33 years ▾
DateofficesChangeDeposits
Jun 30 199438$943M
Jun 30 199540+2$962M
Jun 30 199640·$937M
Jun 30 1997PEAK41+1$940M
Jun 30 199840−1$959M
Jun 30 199939−1$947M
Jun 30 200037−2$980M
Jun 30 200137·$1.0B
Jun 30 200237·$1.0B
Jun 30 200338+1$1.1B
Jun 30 200438·$1.0B
Jun 30 200538·$1.1B
Jun 30 200638·$1.1B
Jun 30 200736−2$1.2B
Jun 30 200837+1$1.4B
Jun 30 200938+1$1.5B
Jun 30 201040+2$1.5B
Jun 30 201140·$1.6B
Jun 30 201240·$1.4B
Jun 30 201339−1$1.4B
Jun 30 201437−2$1.4B
Jun 30 201537·$1.5B
Jun 30 201636−1$1.6B
Jun 30 201736·$1.6B
Jun 30 201835−1$1.6B
Jun 30 201934−1$1.6B
Jun 30 202035+1$1.9B
Jun 30 202132−3$2.2B
Jun 30 202231−1$2.1B
Jun 30 202334+3$2.0B
Jun 30 202432−2$2.0B
Jun 30 202530−2$2.1B
Jun 30 2026NOW29−1$2.2B

Banks in Jefferson County

BankOfficesDeposits here
Watertown Savings Bank10$784M
Community Bank, National Association6$673M
KeyBank National Association3$229M
Gouverneur Savings and Loan Association3$89.4M
GS&L Municipal Bank3$15.9M
Carthage Savings and Loan, National Association2$242M
WSB Municipal Bank1$98.5M
The Upstate National Bank1$17.9M

Every bank office open in Jefferson County

BankAddressOpenedDeposits
Watertown Savings Bank111 Clinton StWatertown 136011894$428M
Community Bank, National AssociationWatertown 216 Washington St Branch216 Washington StWatertown 136011859$297M
Carthage Savings and Loan, National AssociationCarthage Savings And Loan, National Association313 State StCarthage 136191888$171M
KeyBank National AssociationWatertown Main Branch200 Washington StWatertown 136012001$123M
Community Bank, National AssociationWatertown 1125 Arsenal St Branch1125 Arsenal StWatertown 136011964$109M
WSB Municipal BankWsb Municipal Bank111 Clinton StWatertown 136011913$98.5M
Watertown Savings BankAdams Branch10729 Us Route 11Adams 136051966$88.8M
KeyBank National AssociationArsenal Street Branch20974 State Route 3Watertown 136011986$81.4M
Community Bank, National AssociationClayton Branch205 State StClayton 136242005$77.1M
Carthage Savings and Loan, National AssociationWatertown Branch146 Arsenal St, Ste 11Watertown 136012003$70.5M
Community Bank, National AssociationWest Carthage Branch84 Bridge StCarthage 136191975$70.3M
Community Bank, National AssociationAdams Branch26 E Church StAdams 136051947$68.0M
Watertown Savings BankClayton James St Branch352 James StClayton 136242005$59.2M
Watertown Savings BankWatertown Branch101 Commerce Park DrWatertown 136011989$57.3M
Watertown Savings BankState Street Branch1816 State StreetWatertown 136011963$52.6M
Community Bank, National AssociationAlexandria Bay Branch45562 Route 12 Thompson MallAlexandria Bay 136071935$51.6M
Watertown Savings BankAlexandria Bay Branch4 Market StAlexandria Bay 136071998$46.7M
Gouverneur Savings and Loan AssociationAlexandria Bay Branch15 Nys Route 12Alexandria Bay 136072002$38.1M
Gouverneur Savings and Loan AssociationCape Vincent Branch154 E Broadway StCape Vincent 136182022$31.7M
Watertown Savings BankChaumont Branch12221 Nys Route 12eChaumont 136222007$28.8M
KeyBank National AssociationEvans Mills Branch8489 S Main StEvans Mills 136371946$25.0M
Watertown Savings BankSackets Harbor Branch100 West Main StreetSackets Harbor 136851998$22.7M
Gouverneur Savings and Loan AssociationChaumont Branch12084 State Route 12EChaumont 136221986$19.6M
The Upstate National BankPhiladelphia Branch77 Main StreetPhiladelphia 136731994$17.9M
GS&L Municipal BankAlexandria Bay Branch15 State Route 12Alexandria Bay 136072025$9.3M
GS&L Municipal BankCape Vincent Branch154 E Broadway StreetCape Vincent 136182022$3.7M
GS&L Municipal BankChaumont Branch12084 NYS Route 12EChaumont 136222022$3.0M
Watertown Savings BankClinton Street Branch140 Clinton StWatertown 13601 · Drive-through / facility office1996$0
Watertown Savings BankWsb Municipal Bank Branch111 Clinton StWatertown 13601 · Drive-through / facility office2008$0

Sorted by deposits booked on June 30, 2026. "Opened" is the establishment date in the FDIC record.

Offices no longer reported

Offices in Jefferson County that filed a report in some year from 1994 on and are missing from 2026. Most closed; some were sold to non-banks or converted. Newest departures first.

Last bank on the signAddressLast reportPeak deposits
Community Bank, National Association28499 Route 3Black River 136122025$42.9M
GS&L Municipal Bank20410 NYS Route 411La Fargeville 136562024$7.0M
Gouverneur Savings and Loan Association20410 State Route 411La Fargeville 136562024$14.0M
Woodforest National Bank20823 New York 3Watertown 13601 · Full-service retail office2024$2.5M
Armed Forces Bank, National Association10730 Enduring Freedom DrFort Drum 136022023$823K
KeyBank National Association1308 Washington StWatertown 136012023$55.8M
Keybank National Association538 Riverside DriveClayton 136242021$58.8M
Keybank National Association302 State StreetCarthage 136192020$50.4M
Carthage Federal Savings and Loan Association325 State StreetClayton 136242020$8.1M
Manufacturers and Traders Trust Company21877 Towne Center DriveWatertown 136012020$31.9M
KeyBank National Association200 Water StreetDexter 136342018$37.4M
KeyBank National Association13235 Route 11Adams Center 136062017$20.4M
KeyBank National Association10760 South Memorial DriveFort Drum 136022015$14.7M
Community Bank, National Association1218 Arsenal StreetWatertown 136012013$34.7M
KeyBank National Association501 Mill StreetWatertown 136012013$32.0M
HSBC Bank USA, National Association120 Washington StreetWatertown 136012012$320M
Woodforest Bank20823 Ny S Rt 3Watertown 13601 · Full-service retail office2010$241K
Redwood Bank10729 US Route 11Adams 136052007$13.9M
Redwood Bank503 State StreetClayton 13624 · Full-service retail office2006$10.9M
Redwood Bank36263 New York State Route 1Lafargeville 136562006$12.6M
Redwood Bank43567 New York State Route 3Redwood 136792006$14.2M
Community Bank, National Associationre-filed as office 453561352 James StreetClayton 136242005$19.2M
Redwood Bank125 Commercial StreetTheresa 136912005$9.1M
HSBC Bank USA400 Washington StWatertown 136012004$40.2M
Keybank National Associationre-filed as office 364958200 Washington StreetWatertown 136012001$67.7M
Community Bank, National Association414 State StreetCarthage 136191999$26.1M
Keybank National Association144 Eastern BoulevardWatertown 136011999$9.2M
The Redwood National BankPhiladelphia Center Plaza, Route 11Philadelphia 136731998$2.6M
Keybank National Associationre-filed as office 236409100 West Main StreetSackets Harbor 136851998$9.8M
Fleet Bank1125 Arsenal StreetWatertown 136011997$4.2M
Keybank National Associationre-filed as office 291699200 Washington StreetWatertown 136011997$90.7M
Fleet Bank531 Washington StreetWatertown 136011997$28.3M
Marine Midland Bankre-filed as office 236408140 Clinton StreetWatertown 136011995$15.4M
Fleet Bank of New York1627 Washington Street RoadWatertown Township 136011994$0

County FIPS 36045 · 1,268 square miles of land (2024 Census Gazetteer).