Sparkle, also known as Sparkel, is an unincorporated community in Contra Costa County, California, United States. It is on the former route of the Sacramento Northern Railroad, now replaced by elevated BART tracks 2 miles (3.2 km)north of downtown Walnut Creek, at an elevation of 85 feet (26 m). It reputedly got its name from a discharge effect on a tight curve of the electrified line of the Sacramento Northern Railroad. It is a county island like nearby Waldon and is surrounded by Walnut Creek and other incorporated cities.