91770 can be classified socioeconomically as Lower 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 91770 is Asian. The majority race/ethnicity attending public schools in 91770 is Asian. The current unemployment level in 91770 is 5.2%.
| Population | 59,410 |
| Population Growth Rate | 0.00% |
| Population Density | 9,112 People per Square Mile |
| Total Households | 16,433 |
| Percentage High Income Households | 2.3% |
| Median Household Income (2021) | $65,042 |
| Average Adjusted Gross Income (2021) | $394,700 |
| Current Unemployment Rate (May 2026) | 5.2% |
| Sales Tax Rate (2025) | 10.5% |
| Majority Race/Ethnicty | Asian - 60.67% |
| Public School Majority Race/Ethnicty | Asian - 52.99% |
91770 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 6,211 | 9.8% |
| Black | 341 | 0.54% |
| Hispanic | 17,898 | 28.23% |
| Asian | 38,457 | 60.66% |
| Native American | 483 | 0.76% |
| Hawaiian/Pac. Islander | 7 | 0.01% |
91770 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 111 | 1.5% |
| Black | 30 | 0.41% |
| Hispanic | 3,208 | 43.48% |
| Asian | 4,021 | 54.5% |
| Native American | 7 | 0.09% |
| Hawaiian/Pac. Islander | 1 | 0.01% |
91770 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 1,612 | 5.42% |
| Bachelor Degree | 5,027 | 16.9% |
| High School Diploma | 9,566 | 32.16% |
| No High School Diploma | 2,012 | 6.76% |
| GED or Alternate | 743 | 2.5% |
| 1 or More Years of College | 6,575 | 22.1% |
| Associates Degree | 2,508 | 8.43% |
| Masters Degree | 1,241 | 4.17% |
| Professional Degree | 352 | 1.18% |
| Doctorate Degree | 113 | 0.38% |