Because of its proximity to Mexico and the global recruitment capabilities of its innovation economy, the San Diego region is becoming increasingly multicultural, making the City is one of the most ethnically and culturally diverse places in the nation. Nearly 41 percent  (40.8%) of the population, ages 5 or older, speaks a language other than English at home. (That's nearly double the national average of 21.1percent). The percentage of foreign-born persons is 26.5 percent, more than double the U.S. percentage (13.2 percent).
 

The San Diego Association of Governments (SANDAG) provides regional population data, estimates and forecasts. By 2020, the City's population is forecast to be 1.54 million, with 3.54 million people in the entire county. By 2030, the City's population is forecast to be 1.69 million, with 3.54 million people in the county. By 2040, the City's population is forecast to be 1.82 million, with 4.16 million people in the county. By 2050, the City's population is forecast to be 1.95 million, with 4.38 million people in the county. The City of San Diego is a member of SANDAG.

 

The City of San Diego uses a number of U.S. Census-based sources for demographic estimates, among them esri. Download a 2017 esri report for the City of San Diego.