The online survey along with events designed to get the opinion of residents will guide the services and programming provided through the Mental Health Services Act.
The act is funded by Proposition 63, a statewide initiative that passed in 2004.
"It's important for us to hear from people of all ages with mental health challenges, their family members, and community service providers," Dr. Karyn L. Tribble, director of Alameda County Behavioral Health Care Services, said in a statement.
Tribble said the county values people's opinions in preparing a plan to meet the community's needs.
Funding from the Mental Health Services Act helped more than 140,000 people with mental illness in Alameda County during the last fiscal year, county officials said.
The money pays for infrastructure, technology, and elements of training for the county's mental health system.
The survey can be accessed at acmhsa.org/community-input. It's available in English, Spanish and Cantonese until Jan. 31.