Sdfcu is the full form of the State Department Federal Credit Union. A group of eight employees of the Department of State founded Sdfcu in 1935. Since its establishment, it has expanded to over 90,000 members and more than $2.4 billion in assets. The SDFCU’s headquarters are situated in Old Town Alexandria, VA, where it has 06 branches in various places. For SDFCU Login- Online Banking, Account, Register/Sign Up, & other page details. This page also contains various pages such as Careers, Rates, App, Credit Cards, Mobile Banking, Membership, etc. So, please check the details along with the concerning page links provided in this post.