Spring Valley is a census-designated place in Lake County, California.

Spring Valley sits at an elevation of 1,581 feet (482 m).

The 2010 United States census reported Spring Valley's population was 845.

The racial makeup of Spring Valley was 766 (90.7%) White, 15 (1.8%) African American, 10 (1.2%) Native American, 6 (0.7%) Asian, 3 (0.4%) Pacific Islander, 24 (2.8%) from other races, and 21 (2.5%) from two or more races.

738 people (87.3% of the population) lived in owner-occupied housing units and 107 people (12.7%) lived in rental housing units.