Onyx is located in California. Onyx, California has a population of 621. Onyx is less family-centric than the surrounding county with 20.71% of the households containing married families with children. The county average for households married with children is 36.46%.
The median household income in Onyx, California is $31,250. The median household income for the surrounding county is $50,826 compared to the national median of $57,652. The median age of people living in Onyx is 47.5 years.
The average high temperature in July is 101.9 degrees, with an average low temperature in January of 31.7 degrees. The average rainfall is approximately 9.3 inches per year, with 0.4 inches of snow per year.
