Gilroy Farmers' Market (map) 7351 Rosanna Street and 7th Street Gilroy, CA USA ✚ gCal ✚ iCal Gilroy Downtown Farmers’ Market opens Saturday May 16th, from 9am to 1pm at the Gilroy City Hall Parking Lot (at 7351 Rosanna Street and 7th Street).Taste the harvest from over 30 local family farmers.