The commune covers an area of . The eastern (and smaller) part of its territory lies within the fertile, central plain or "depresión intermedia", (Chilean Central Valley) but the extense western part is hilly and somewhat drier, a typical "Cordillera de la Costa" terrain, which requires supplemental irrigation to support its varied cultivations.
The commune includes an area. The eastern portion, which is smaller, is situated within the fertile central plain or "depresión intermedia" (Chilean Central Valley), while the western part, being extensive, comprises hills and a drier climate typical of the "Cordillera de la Costa." Supplemental irrigation is necessary for diverse cultivation.