In Southern California, there are several government agencies and organizations that provide support and services to individuals with developmental disabilities. These agencies offer a wide range of resources, including information, advocacy, and assistance in accessing needed services. Some of the key agencies in Southern California include:

California Department of Developmental Services (DDS): 
https://www.dds.ca.gov/

The California DDS is responsible for providing services and support to individuals with developmental disabilities. They oversee the regional centers that offer a variety of services and resources.

Regional Centers: 
https://www.dds.ca.gov/rc/

Regional centers are nonprofit private corporations that contract with the California DDS to provide services and support to individuals with developmental disabilities. There are numerous regional centers throughout Southern California, each serving a specific catchment area. They can help with assessments, service planning, and connecting individuals with service providers.

Department of Rehabilitation (DOR): 
https://www.dor.ca.gov/Home/Bakersfield

The California DOR offers vocational rehabilitation services to individuals with disabilities, including developmental disabilities, to help them prepare for, find, and retain employment.

Department of Education Special Education Division:
https://www.cde.ca.gov/sp/se/sr/

This division provides information and resources related to special education services and support for students with disabilities in California’s public schools.

Los Angeles Unified School District (LAUSD): 
https://www.lausd.org/domain/4

LAUSD offers special education services for students with disabilities, including those with developmental disabilities, enrolled in its schools.

Community-Based Organizations: 

Southern California is home to numerous nonprofit organizations and advocacy groups supporting individuals with developmental disabilities and their families. These organizations can provide additional resources and support.

These agencies can help with assessments, developing individualized service plans, and connecting individuals with appropriate services, including educational, vocational, and residential support.