Capital One Diamond Square

The Capital One Diamond Square branch is one of the bank's 274 locations and has been serving the financial needs of their customers in Gaithersburg, Montgomery County, Maryland since 1985. The Diamond Square branch operates as a full-service, brick and mortar office and is located at 12 Bureau Drive, Gaithersburg, MD 20878. You can can contact the branch by calling 301-963-3030 or by visiting the location during regular business hours for assistance with your banking needs, such as opening checking and savings accounts, applying for loans and managing financial transactions.

The routing number for Capital One Diamond Square branch is 255071981. It is valid for Automated Clearing House ACH transactions, such as direct deposits and bill payments as well as wire transfers, which are used for real-time bank-to-bank transactions. We recommend that you contact the branch directly to verify this information before proceeding with any transactions.

• ■ Monday:9:00am - 5:00pm
• ■ Tuesday:9:00am - 5:00pm
• ■ Wednesday:9:00am - 5:00pm
• ■ Thursday:9:00am - 5:00pm
• ■ Friday:9:00am - 5:00pm
• ■ Saturday:9:00am - 12:00pm
• ■ Sunday:Closed

Capital One Diamond Square offers both lobby and drive-thru hours. This location is open Monday to Saturday and closed on Sundays. The branch opens at 9:00am in the morning. Please be advised that this information reflects the standard opening and closing hours of Capital One and is subject to change. We recommend contacting the Diamond Square branch prior to your visit to confirm its hours of operation and availability.

• Bank Name:Capital One
• Bank Type:National Bank
• FDIC Insurance:Certificate #4297
• Routing Number:ACH & Wire - 255071981
• Online Banking:capitalone.com
• Branch Count:274 Offices in 7 states