| ZIP Code | 91789 |
| ZIP Code Name | Walnut |
| Primary County | Los Angeles County |
| ZIP Code Type | Standard |
| Population (2021) | 41,829 |
| Area Code(s) | 626 / 909 |
| Current Time | PDT |
91789 is a United States ZIP Code located in Walnut California. Portions of 91789 are also in Rowland Heights and Industry and Pomona and Diamond Bar. 91789 is entirely within Los Angeles County. 91789 is within Metro Los Angeles.
91789 can be classified socioeconically as a Middle Class class zipcode in comparison to other zipcodes in California based on Median Household Income and Average Adjusted Gross Income. Measuring level of educational attainment the majority of adults in 91789 have at least a Bachelor Degree. 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 3.4%.
| Population | 41,829 |
| Population Growth Rate | -5.18% |
| Population Density | 2,648 People per Square Mile |
| Total Households | 12,397 |
| Percentage High Income Households | 11.9% |
| Median Houshold Income (2021) | $116,583 |
| Average Adjusted Gross Income (2019) | $105,460 |
| Current Unemployment Rate (May 2023) | 3.4% |
| Majority Race/Ethnicty | Asian - 62.55% |
| Public School Majority Race/Ethnicty | Asian - 59.23% |
| 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% |
| 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% |
| Highest Education Level Attained | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 1,105 | 4.08% |
| Bachelor Degree | 9,075 | 33.54% |
| 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 | 13.72% |
| Associates Degree | 3,397 | 12.56% |
| Masters Degree | 3,215 | 11.88% |
| Professional Degree | 1,066 | 3.94% |
| Doctorate Degree | 435 | 1.61% |
| Coordinates | 34.02077484,-117.85411835 |
| Adjacent ZIP Codes | |
| Cities/Towns in 91789 | |
| Region | Metro Los Angeles |
| Metropolitan/Micropolitan Stat Area | Los Angeles-Long Beach-Anaheim, CA |
| Time Zone | Pacific Daylight Time |
| IANA Timezone | America/Los_Angeles |
| Area | 16 Square Miles |
| US Congressional Districts in 91789 | |
| California State Senate Districts in 91789 | |
| California State Assembly Districts in 91789 |
| School Districts in 91789 | |
| Elementary Schools in 91789 | |
| Middle Schools in 91789 | |
| High Schools in 91789 |
| Plant Hardiness Zone | Zone 10a: 30F to 35F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | December 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | February 1 - 10 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Csa - Hot-Summer Mediterranean Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||