91789 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in California based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 91789 is Asian. The majority race/ethnicity attending public schools in 91789 is Asian. The current unemployment level in 91789 is 6.1%.
| Population | 41,377 |
| Population Growth Rate | 0.00% |
| Population Density | 2,619 People per Square Mile |
| Total Households | 12,397 |
| Percentage High Income Households | 11.9% |
| Median Household Income (2021) | $116,583 |
| Average Adjusted Gross Income (2021) | $634,940 |
| Current Unemployment Rate (September 2025) | 6.1% |
| Sales Tax Rate (2025) | 10.5% |
| Majority Race/Ethnicty | Asian - 62.55% |
| Public School Majority Race/Ethnicty | Asian - 59.23% |
91789 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 7,284 | 16.48% |
| Black | 1,100 | 2.49% |
| Hispanic | 7,911 | 17.9% |
| Asian | 27,533 | 62.3% |
| Native American | 191 | 0.43% |
| Hawaiian/Pac. Islander | 174 | 0.39% |
91789 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 414 | 4.86% |
| Black | 122 | 1.43% |
| Hispanic | 2,671 | 31.35% |
| Asian | 5,269 | 61.84% |
| Native American | 4 | 0.05% |
| Hawaiian/Pac. Islander | 41 | 0.48% |
91789 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 1,105 | 4.09% |
| Bachelor Degree | 9,075 | 33.55% |
| High School Diploma | 4,252 | 15.72% |
| No High School Diploma | 492 | 1.82% |
| GED or Alternate | 297 | 1.1% |
| 1 or More Years of College | 3,713 | 13.73% |
| Associates Degree | 3,397 | 12.56% |
| Masters Degree | 3,215 | 11.89% |
| Professional Degree | 1,066 | 3.94% |
| Doctorate Degree | 435 | 1.61% |