 By the late 1970s, African-American families began to move out of Santa Ana.According to the California State Department of Finance, Demographic Research Unit, the current population for 2015 is 335,264.As of 2015, 52,582 residents are enrolled in Santa Ana Unified School District K-12 schools, with 11,156 resident students attending Garden Grove schools within Santa Ana and Garden Grove city limits in Garden Grove Unified School District.