First US Community Credit Union - Grass Valley Share: Banks & Credit Unions First US Community Credit Union - Grass Valley Visit Website 2100 Nevada City Hwy Grass Valley, CA 95945 (530) 272-5858 (530) 272-0307 (fax) About Map About First U.S. provides value, service, and financial solutions for residents of greater Sacramento and California federal employees. A full-service credit union now offering business services, including What's Nearby? Distance: 5 10 15 20 25 50 mi.