Walnut is located in California. Walnut, California 91789has a population of 30,489. Walnut 91789 is more family-centric than the surrounding county with 30% households with children. The county percentage for households with children is 29%.
The median household income in Walnut, California 91789 is $105,286. The median household income for the surrounding county is $67,678 compared to the national median of $61,963. The median age of people living in Walnut 91789 is 44.1 years.
The average high temperature in July is 88.7 degrees, with an average low temperature in January of 41.5 degrees. The annual precipitation is 16.98.