Ridgemark is a census-designated place (CDP) located adjacent to the southeastern edge of Hollister in San Benito County, California, United States.

Development of the community began in the early 1970s,[3] and the population had reached 3,212 at the time of the 2020 United States Census.

[4] According to the United States Census Bureau, the CDP has a total area of 2.6 square miles (6.7 km2), all of it land.

This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F.

244 households (20.2%) were made up of individuals, and 141 (11.7%) had someone living alone who was 65 years of age or older.

There were 1,260 housing units at an average density of 490.3 per square mile (189.3/km2), of which 1,008 (83.5%) were owner-occupied, and 199 (16.5%) were occupied by renters.

18.4% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older.

In the California State Legislature, Ridgemark is in the 12th Senate District, represented by Republican Shannon Grove, and in the 30th Assembly District, represented by Democrat Dawn Addis.