For statistical purposes, the United States Census Bureau has defined Santa Rosa Valley as a census-designated place (CDP).

Most of the area consists of agricultural lands and it is home to a variety of wildlife such as bobcats, gray foxes, mule deer, coyotes, and more.

[5][6] Immediately to the south is the Conejo Canyons Open Space, with trails leading to the Arroyo Conejo Nature Preserve (La Branca) and Hill Canyon, and the community also borders Mount Clef Ridge and Wildwood Regional Park to the south.

[7][8] Santa Rosa Valley was home to a Chumash village in pre-colonial times, known as Šumpaši, which was located by Conejo Creek.

[9] According to the United States Census Bureau, the CDP covers an area of 6.9 square miles (17.8 km2), all of it land.

There were 1,159 housing units at an average density of 168.9 per square mile (65.2/km2), of which 1,037 (93.2%) were owner-occupied, and 76 (6.8%) were occupied by renters.