San Diego County Credit Union - Rancho Penasquitos Share: Credit UnionsRenewing Members San Diego County Credit Union - Rancho Penasquitos Visit Website Request Info 13173 Black Mountain Road Suite 3 San Diego, CA 92129 (877) 732-2848 https://www.sdccu.com/ Map What's Nearby? Distance: 5 10 15 20 25 50 mi.