School Address: 2323 Placentia Avenue Costa Mesa, CA 92627
Main Office Phone Number: 949-515-6500
Attendance Office Phone Number: 949-515-6505
Fax Number: 949-515-6570
Directions to Estancia High School: Courtesy of Google Maps
Telephone Numbers
| Main Office | 949-515-6500 |
| Principal | 949-515-6501 |
| Activities (ASB Office) | 949-515-6506 |
| Alumni Information (ASB Office) | 949-515-6506 |
| Athletics | 949-515-6508 |
| Attendance | 949-515-6505 |
| Cafeteria | 949-515-6510 |
| Career Center | 949-515-6509 |
| Community Coordinator | 949-515-6554 |
| Counseling | 949-515-6504 |
| English Department. | 949-515-6521 |
| World Language Department | 949-515-6522 |
| Graduation Information (ASB) | 949-515-6506 |
| Industrial Arts Department | 949-515-6549 |
| Library | 949-515-6512 |
| Lost Found (ASB Office) | 949-515-6506 |
| Math Department | 949-515-6524 |
| Migrant Education | 949-515-6541 |
| Music Department | 949-515-6525 |
| Health Office | 949-515-6507 |
| PE Boys | 949-515-6526 |
| PE Girls | 949-515-6578 |
| Science Department | 949-515-6528 |
| Social Studies Department | 949-515-6529 |
| Special Education Department | 949-515-6542 |
| Use of Facilities Requests (ASB) | 949-515-6506 |
