Mission Hills is a census-designated place (CDP) in Santa Barbara County, California, a short distance north of Lompoc on Highway 1.

[6] According to the United States Census Bureau, the CDP has a total area of 1.2 square miles (3.1 km2), 99.36% of it land and 0.64% of it water.

The racial makeup of Mission Hills was 2,689 (75.2%) White; 91 (2.5%) African American; 74 (2.1%) Native American; 125 (3.5%) Asian; 9 (0.3%) Pacific Islander; 386 (10.8%) from other races; and 202 (5.6%) from two or more races.

2,878 people (80.5% of the population) lived in owner-occupied housing units and 698 people (19.5%) lived in rental housing units.

There were 1,072 housing units at an average density of 867.8 per square mile (335.1/km2).

The racial makeup of the CDP was 30.22% White, 0% African American, 0% Native American, 70.69% Asian, 0% Pacific Islander, 0% from other races, and 0% from two or more races.

[8] Of the 1,049 households 38.5% had children under the age of 18 living with them, 69.5% were married couples living together, 9.1% had a female householder with no husband present, and 17.1% were non-families.