The city of Casablanca is located on Route 68 between Santiago and the city of Valparaíso, at about 30 minutes southeast of Valparaíso and 50 minutes northwest of Santiago traveling by car. It is a region known for white wine grapes, especially Sauvignon blanc and Chardonnay. The commune of Casablanca spans an area of 952.5 km2 (368 sq mi).
According to the 2002 census of the National Statistics Institute, Casablanca spans an area of 952.5 km2 (368 sq mi) and has 21,874 inhabitants (11,127 men and 10,747 women). Of these, 15,209 (69.5%) lived in urban areas and 6,665 (30.5%) in rural areas. The population grew by 31.9% (5,284 persons) between the 1992 and 2002 censuses.
The Casablanca Valley is a wine producing region 75 km (47 mi) northwest of Santiago. It is a Denomination of Origin (DO) defined by the Chilean Appellation system, the legally defined and protected geographical indication used to identify where the grapes for a wine were grown. The valley takes its name from the commune of Casablanca and stretches roughly 30 km (19 miles) east-west from eastern border of the Valparaíso province in the Valparaísoregion. Vines were first planted here in the mid-1980s during the revitalization of the Chilean wine industry and quickly became known for its white wines, most notably Sauvignon Blanc and Chardonnay, as well as Pinot Noir, which thrives in its cooler climate. Although the valley is located at 33°S, much closer to the Equator than any European vineyard, viticulture here is possible because of the cooling influence of the Pacific ocean, in the shape of cool morning fog and greater cloud cover than is found elsewhere in the north of Chile.