, ▁ 1 9 8 4 ; ▁split ▁off ▁ 6 2 6 ▁on ▁June ▁ 1 4 , ▁ 1 9 9 7 ; ▁over la id ▁by ▁ 7 4 7 ▁on ▁May ▁ 1 8 , ▁ 2 0 0 9 ) ▁ 8 2 0 ▁– ▁Over lay ▁with ▁ 8 0 5 ▁on ▁July ▁ 2 , ▁ 2 0 1 8 ▁ 8 3 1 ▁– ▁ ▁Mon ter ey , ▁Santa ▁Cruz , ▁Sal inas , ▁and ▁H oll ister ; ▁the ▁northern ▁Central ▁Coast . ▁( Split ▁from ▁ 4 0 8 ▁on ▁July ▁ 1 1 , ▁ 1 9 9 8 ) ▁ 8 4 0 ▁– ▁Over lay ▁of ▁ 9 0 9 ▁effective ▁February ▁ 2 3 , ▁ 2 0 2 1 ▁ 8 5 8 ▁– ▁City ▁of ▁San ▁Diego ▁and ▁sub ur bs ; ▁originally ▁created ▁by ▁a ▁split ▁from ▁ 6 1 9 ▁on ▁June ▁ 1 2 , ▁ 1 9 9 9 ; ▁however , ▁re - mer ged ▁with ▁ 6 1 9 ▁to ▁create ▁the ▁ 6 1 9 / 8 5 8 ▁overlay ▁in ▁June ▁ 2 0 1 8 ) ▁ 9 0 9 ▁– ▁San ▁Bernard ino , ▁Ontario , ▁Pom ona , ▁and ▁Ch ino ; ▁eastern ▁Los ▁Angeles ▁County ▁and ▁south western ▁San ▁Bernard ino ▁County . ▁( Split ▁from ▁ 7 1 4 ▁on ▁November ▁ 1 4 , ▁ 1 9 9 2 ; ▁split ▁off