Image of diversityDemographics Overview

San Joaquin County’s population has increased recently and continues to swell. Racial and ethnic diversity will increase. Hispanic and Latino populations have been the largest racial or ethinic group since 2010, and will grow more in the future. By age, young (0–19) and old (60+) age groups will dominate San Joaquin County.

Demographics by Race

San Joaquin County's ethnic breakdown reveals that “Hispanic or Latino” (40.5%) represents the largest racial or ethnic group. The "White Alone" population is also large (33.9%).

39 Languages spoken in San Joaquin County

 Rank Language Spoken at Home Number of Speakers
 1 English 404,956
 2 Spanish 179,618
 3 Tagalog 21,524
 4 Punjabi 13,606
 5 Chinese 9,615
 6Khmer 8,027
 7Vietnamese 7,270
 8 Arabic 5,610
 9 Persian 4,109
 10 Hmong 3,939

Age Distribution
San Joaquin County leans younger — 30.6% of its population is under 20. The next biggest age group includes millennials and Gen X-ers (20–54) at 46.6%.This lowers San Joaquin County's median age (34.3 years) to below those of California and the U.S. We predict the county’s most prominent age group will be 0–19 year-olds in the next 40 years.
 Age Percent of Population
 0-19 30.6%
 20-54 46.6%
 55-64 11.0%
 65 and over 11.9%

Population Forecasts 
What is Forecasting? Forecasting uses current and historical trends interpreted into graphs and percentages. We then use these projections to model what our county may look like in 20–40 years.
Forecast by Race and Ethnicity
This UOP Center for Business and Policy Research (CBPR) projection shows our region’s racial and ethnic make-up based on 2010 and 2015 trends. It shows our growing populations will be primarily Hispanic, while our White populations will grow at a much slower rate than in the past.

Forecast by Age
This CBPR forecast shows the 0–19 age group rapidly growing. The 40–50 group will grow more slowly while the 20–39 category will make up most of our population.