The major population centers are the Oxnard Plain and the Simi and Conejo Valleys.

Because the surface of the Oxnard Plain is flat, giving no hint of the subsurface structure potentially containing oil, the region was overlooked by early drillers.

The Oxnard Plain is to the west of Santa Susana Mountains.

Oxnard Plain is also a major producer of celery, lima beans, lettuce, tomatoes, broccoli, onions and citrus fruits, namely lemons.

In addition to agriculture, the Oxnard Plain contains a considerable petroleum reserve.

Approaching the Oxnard Plain, it passes through a notch in the mountain that forms Point Mugu.

It is located at the western edge of the fertile Oxnard Plain, sitting adjacent to an agricultural center of strawberries and lima beans.

Oxnard is located on the Oxnard Plain, an area with fertile soil.

The Oxnard Plain, because of these high-quality agricultural soils, coupled with a favorable climate, is considered one of the most fertile areas in the world.

The Oxnard Plain is well known for its strawberries.