FDIC-insured bank

Security Bank

Bank headquartered in New Auburn, Wisconsin, part of SECURITY BANK SHARES INC.
Source: FDIC BankFind Suite, data as of June 30, 2026, fetched September 5, 2026
Total assets
$253.82 million
Total deposits
$216.35 million
Branches
4
FDIC-insured since
1934
Established
1907

Headquarters and contact

Address112 E Main St
New Auburn, WI 54757
CountyChippewa
Metro areaEau Claire, WI
Websitewww.securityonlinebank.com
Phonenot published in FDIC data, see the bank's website

FDIC record

FDIC Certificate10015
Federal Reserve RSSD ID20053
StatusActive
Charter classNM (STATE)
Holding companySECURITY BANK SHARES INC
Domestic offices4
Financials as ofJune 30, 2026

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.securityonlinebank.com.
See how your odds compare before you apply at Security Bank.

Offices nearest to headquarters

Security Bank main office
New Auburn, WI
112 E Main St, 54757
Sand Creek Branch
Sand Creek, WI
County Road 1, 54765
Bloomer Office
Bloomer, WI
1923 17th Ave, 54724
Ridgeland Office Branch
Ridgeland, WI
101 Main Street, 54763

Where Security Bank has offices