Diego is a cdp located in San Diego County, in the state of California (CA), United States. Nestled in the Pacific division of the West region, it covers an area of 8.9 square miles (23.0 km²) and sits at an elevation of 358 ft. With a population of approximately 20,155 residents, Diego offers a vibrant community life.
The town's population is composed of about 48.95% males and 51.05% females, and it has a population density of 272.27 people per square mile (877.33/km²). Diego lies at a latitude of 32.77 and a longitude of -116.92, operating in the UTC-8.
Locals reflect a blend of American ancestry, with roots primarily in United States (0%), followed by English (14.2%), German (20.6%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 92019.