Assessor
Phone: (714) 834-2727
- Assessment: (714) 834-2941
Child Support Services
Phone: (714) 541-7600
- Legal Support Services: *(714) 347-8150
Children and Families Commission of OC
Phone: (714) 834-5310
Clerk of the Board
Phone: (714) 834-3453
- Property Tax Assessment Appeals: (714) 834-2331
County Clerk-Recorder
Phone: (714) 834-2500
- County Archives: (714) 834-2434
- Fictitious Business Names: (714) 834-2889
- Marriage Licenses/Passports: (714) 834-2710
- Property Document Recording: (714) 834-2887
- Vital Records/Birth, Marriage and Death Certificates: (714) 834-2500
District Attorney
Phone: (714) 834-3600
- Child Abuse: (714) 940-1000
- Family Protection Unit: (714) 347-1453
- Drugs and Narcotics Unit: (714) 347-8538
- Victim/Witness Assistance Program's Elder Abuse Victim Services: (714) 347-8828
- Elder Abuse Forensic Center: (714) 825-3087
- Long Term Care Ombudsman: (714) 479-0107
- Gand Unit: 714
- 347-8518
- TARGET Unit: (714) 347-8498
- CSP Gang Victim Services: (714) 935-7492
- Homicide Unit: (714) 347-8482
- Juvenile Justice Center: (714) 935-7624
- Sexual Assault Victim Services: (714) 834-4317
Fire Authority Orange County
Phone: (714) 573-6000
Health Care Agency (HCA)
Phone: (800) 564-8448
- Alcohol & Drug Abuse Services: (714) 834-3840
- Animal Control Services: (714) 935-6848 (Animal Care Services)
- Immunizations: (714) 834-8444
- Environmental Health: (714) 433-6000
- Mental health: (714) 834-4707
- Public health Laboratory: (714) 834-8285 (Results)
Housing and Community Services Department
Phone: (714) 480-2900
- Housing Assistance: (714) 480-2700
- Occupancy/Residency, rental Assistance & Special housing Program
- Housing Development and Administrative Services: (714) 480-2900
- Housing and Redevelopment
- Human Relations Commission: (714) 567-7470
- Office of Aging and Homeless Prevention: (714) 567-7500
- Veterans Service Office: (714) 480-6555
John Wayne Airport
Phone: 949-252-5171
Orange County Transportation Authority
Phone: (714) 560-6282
Probation Department
Phone: (714) 569-2000
Public Administrator/Public Guardian
Phone: (714) 834-567-7660
Public Defender
Phone: (714) 834-2144
Public Library
Phone: (714) 566-3000
Registrar of voters (Registration and Elections)
Phone: (714) 567-7600
Resources and Development Management Department
Phone: (714) 834-2300
Social Services Agency
Phone: (714) 541-7700
- Adult Services and Assistance Programs
- In-Home Supportive Services: (714) 825-3000
- Multipurpose Senior Services program: (714) 825-3000
- Food Stamps and Medi-Cal: (714) 741-7100
- CalWorks: (714) 667-8500
- Children and Family Services Division
- Family Assessment and Shelter Services: (714) 704-8000
- Child Abuse Registry: (714) 940-1000
- Child Abuse Services Team (CAST): (714) 940-4747
Sheriff-Coroner Department
Phone: (714) 647-7000
Treasurer-Tax Collector
Phone: (714) 834-3411