Cash Rewards Visa Platinum — San Diego County Credit Union is a personal credit card from San Diego County Credit Union. Application typically pulls a hard report from Experian. The annual fee is $0. The ongoing APR is 14.24% to 20.24% variable, based on creditworthiness after a No introductory APR introductory rate. Rewards: Unlimited 1% cash back on net purchases, posted monthly as a statement credit.