Helendale or Silver Lakes is an unincorporated community and census-designated place located in the Victor Valley of the Mojave Desert, within San Bernardino County, California.It is on historic Route 66, west of the Mojave Freeway, between Barstow and Victorville. The name Helendale is used by the USPS, while Silver Lakes is used by the US Census. The 2010 United States census reported Silver Lakes's population was 5,623.