As one of Chile's second level administrative divisions, Malleco comprises eleven communes, each administered by its respective municipality.

[1] Located 340 miles (540 km) south of the capital of Chile, Santiago, the Malleco wine region lies in the province of the same name.

It is one of Chile’s southern Denomination of Origin (DO) regions as defined by the Chilean Appellation system, the legally protected geographical indication used to identify where the grapes for a wine were grown.

The wine industry here is still developing but good results are already being obtained, particularly from its crispy and fresh Chardonnay and Pinot Noir.

Although the valley has high rainfall, vines have to make extra effort to hydrate due to the well-drained soil, which results in less foliage and lower grape yields.