Hosted by History San Jose, the event will feature activities that defined the lives of people in California during the 1800s.
Festivities include gold panning, adobe brick making, butter churning, and crafting cornhusk dolls, event organizers said.
The family-friendly celebration is free for children under 6 years old and History San Jose members. Admission is $5 for older children, seniors and students and $8 for adults.
Pioneer Day takes place from 11:30 a.m. to 3:30 p.m. at History Park, which is located at the south end of Kelley Park, at the corner of Senter Road and Phelan Avenue in San Jose.