The survey from the Sacramento Bee found two-thirds of the more than 10,000 registered voters surveyed said they support the practice at businesses such as concert venues, sports stadiums, cruise ships and casinos.
The poll -- which was conducted by the Institute of Governmental Studies at the University of California, Berkeley -- also found 61% support employers requiring their workers get the COVID-19 vaccine.
California mask mandate: When you still have to wear a mask, what will change on June 15
Health secretary explains why California is keeping mask mandate in place
The survey comes as California prepares to fully reopen its economy on June 15. At that time, the state also plans to lift its mask mandate for fully vaccinated people.
As of Wednesday, California had a COVID-19 test positivity rate of less than 1%. Nearly half of California's population, 15.5 million people, are fully vaccinated -- with 35.8 million doses administered as of Wednesday, according to data from the state.
These 3 California counties haven't seen new COVID-19 cases in weeks
These 3 California counties haven't seen new COVID-19 cases in weeks