WinCo is the latest grocer to start charging for plastic bags following Prop 67 being passed in the general election last week.
The grocer will charge 10 cents for single-use bags or 88 cents for reusable bags starting Monday.
Target and Walmart started charging last week.
Proposition 67 banned the use of single-use plastic bags at stores in California. It's the first statewide ban on plastic bags in the nation.