Grand Island is located in California. Grand Island, California has a population of 571.
The median household income in Grand Island, California is $56,833. The median household income for the surrounding county is $76,422 compared to the national median of $69,021. The median age of people living in Grand Island is 33.1 years.
The average high temperature in July is 92.5 degrees, with an average low temperature in January of 38.4 degrees. The average rainfall is approximately 18.5 inches per year, with 0 inches of snow per year.
