Fort Sill National Online Banking

FSNB, formerly known as Fort Sill National Bank, has a tradition of distinguished banking service to both the military and civilian communities. In 1942, the Fort Sill command asked City National Bank of Lawton to establish a check cashing facility on the Army post of Fort Sill, home of the U.S. Field Artillery School. Four years later, J. R. “Dolph” Montgomery had the vision to establish a full service bank to meet the special banking needs of Fort Sill’s military personnel. Through hard work and determination Mr. Montgomery founded Fort Sill National Bank on April 19, 1946 and forged a legacy as a leader in military banking and customer service.

Mr. Montgomery’s legacy now continues into the third generation of military bankers. The bank is now guided by the innovative leadership of his grandson John Davis, Chairman of the board, President, and CEO.

The bank now has an estimated 800 employees, each dedicated to ensuring every customer, regardless of position or rank, receives immediate and outstanding service.

FSNB continues to add branches and service centers in such diverse places as Oklahoma, Texas, Georgia, North Carolina, Tennessee, Delaware, Louisiana, Mississippi, and Arkansas.

 Customer Service Telephone

United States

1 (580) 357-9880
1 (800) 749-4583
Fax: 1 (580) 355-0641

United Kingdom








Online Banking Login

You can only login to your online account if you have already registered. That means that to log in, you will need to use your login details.  If you don’t know how to login or enroll, follow the steps in order to do it.

Video For First National Bank Online Banking Login | Sign-in

Routing/Wiring Instructions

Sadly, international transfers are not supported by FSNB. If you wish to make international transactions, you can contact the wire department at 1-800-749-4583 x2373 for alternative solutions. Also, please note that a transfer might take from 1 to 3 business days to complete.

Here are the steps:

  1. Log into your online banking account at using your User ID and Password
  2. Find the “Wire Transfer” on the right side of the menu.
  3. Input the required information into the request form.

In order to make a FSNB wire transfer to your FSNB account, you will need:

  • Routing Number 103112675
  • Your Name and Account Number

*Note that the cut-off time for outgoing wires is 3:00 p.m. CST and for income wires is 4:30 p.m. CST

For transfers to someone who is not on your FSNB account, follow these steps:

  1. Request the wire transfer at an FSNB branch
  2. Find the FSNB Online Banking > Wire Transfer > Request Wire Transfer.
  3. Complete the wire form, approve and submit it.
  4. Sometimes, the FSNB requires a notarized signature that you need to send by Fax at (580) 355-0641. It should contain the following information:
    • Your name and FSNB account number or Social Security number
    • Amount you would like to wire
    • Name and address on receiving bank account
    • Name of receiving bank
    • City and State of receiving bank
    • Receiving bank’s nine digit routing/ABA number
    • Your contact phone number
 Routing Number  Swift Number


  Not part of SWIFT network

Branch Locations And Opening Hours

FSNB – Arkansas


Open Hours

Monday – Thursday : 9:00 AM – 6:00 PM
Friday : 9:00 AM – 7:00 PM
Saturday : 9:00 AM -2:00 PM
North Conway
Monday – Thursday : 9:00 AM – 6:00 PM
Friday : 9:00 AM – 7:00 PM
Saturday : 9:00 AM -2:00 PM
Pine Bluff
Monday – Thursday : 9:00 AM – 6:00 PM
Friday : 9:00 AM – 7:00 PM
Saturday : 9:00 AM -2:00 PM
Monday – Thursday : 9:00 AM – 6:00 PM
Friday : 9:00 AM – 7:00 PM
Saturday : 9:00 AM -2:00 PM
West Memphis
Monday – Friday : 8:30 AM – 6:00 PM
Saturday : 8:30 AM – 4:00 PM
Please click here  for more info.


Routing Number