How to Find Your DoD ID Number

Your DoD ID number is a critical 10-digit identifier used for Department of Defense personnel and affiliates, facilitating access to various official systems and services. You can typically locate this number using one of two primary methods: by checking your Common Access Card (CAC) or by accessing the DoD ID Card Office Online portal.

Method 1: Locate Your DoD ID on Your Common Access Card (CAC)

The most direct and common way to find your DoD ID number is by examining your Common Access Card (CAC). The CAC is a standardized smart card issued by the U.S. Department of Defense to authorized personnel, including active-duty military, reserve members, civilian employees, and eligible contractors.

• Step 1: Inspect the back of your CAC. Turn your card over to the side opposite your photo and personal information.
• Step 2: Locate the 10-digit number. You will find a unique 10-digit number prominently printed on the back of the card. This sequence is your specific DoD ID number.

Method 2: Access the DoD ID Card Office Online Portal

If your DoD ID number is not present on your CAC, or if you need to retrieve it digitally (for instance, if you're updating an online profile like in the Defense Travel System), you can access it through the official online portal. This method requires internet access and typically your CAC for login.

• Step 1: Go to the DoD ID Card Office Online portal. Navigate to the official DMDC Identity Management website, which hosts the ID Card Office Online.
• Step 2: Log in to your profile. Use your Common Access Card (CAC) with a card reader to securely log in. Alternatively, if applicable, you might use other approved login methods.
• Step 3: View your profile information. Once successfully logged in, your DoD ID number will be displayed as part of your personal profile details.

What is a DoD ID Number?

The DoD ID number is a distinct 10-digit identification number assigned to individuals with an official affiliation to the Department of Defense. This typically includes:

• Active-duty military personnel
• Military reservists
• National Guard members
• Department of Defense civilian employees
• Eligible DoD contractors
• Certain other beneficiaries with official ties to the DoD

This identifier is fundamental for various administrative and operational functions within the DoD, ensuring accurate personnel records and system access.

Quick Reference: Finding Your DoD ID

Knowing how to swiftly locate your DoD ID number is essential for managing your official Department of Defense records and accessing various support systems.