| ZIP Code | 91789 |
|---|---|
| City | Walnut |
| State | California (CA) |
| County | Los Angeles County |
| Area Code | 840/909 |
| Elevation | 526 ft |
| Latitude | 34.018195 |
|---|---|
| Longitude | -117.854821 |
| Timezone | Los Angeles (DST) |
| FIPS | 06037 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 46.3 yrs ↑ 5% since 2019 |
|---|---|
| Avg Household Size | 3.21 |
| Below Poverty | 7.7% ▼ 24% below avg |
| College Grads | 62.7% ▲ 62% above avg |
| Unemployment | 4.3% ▼ 12% below avg |
| No HS Diploma | 660 (2.3%) |
| HS Graduate | 4,932 (17.1%) |
| Some College | 1,797 (6.2%) |
| Associates | 3,393 (11.7%) |
| Bachelors | 2,639 (9.1%) |
| Graduate Degree | 15,477 (53.6%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $125,742 ▲ 65% above avg ↑ 23% since 2019 |
|---|---|
| Median Home Value | $936,800 ▲ 236% above avg ↑ 27% since 2019 |
| Home/Income Ratio | 7.5x (nat avg ~3.5x) |
| Median Rent | $2,868/mo ↑ 26% since 2019 |
| Total Units | 13,486 |
| Vacant Units | 770 |
| Avg HH Size | 3.21 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 13,486 |
|---|---|
| Vacant | 770 |
| Owner Occupied | 82.4% |
| Renter Occupied | 17.6% |
| Avg HH Size | 3.21 |
ZIP code 91789 is located in Walnut, California, within Los Angeles County. With a population of 40,933, this is a highly populated ZIP code with a mature community — the median age is 46.3 years. Economically, 91789 is a upper-middle-income ZIP code: the median household income of $125,742 is significantly above the national average.
Real estate in ZIP code 91789 represents among the most expensive housing markets in the country. The median home value of $936,800 is more than double the national average. Renters can expect to pay around $2,868 per month in median rent. Homeownership is strong here — 82.4% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 27% since 2019.
The population of 91789 is majority Asian (66.74%). Residents are highly educated — 62.7% hold a bachelor's degree or higher, which is significantly above the national average. Poverty affects a relatively small share of residents at 7.7%. Household income has grown by 23% since 2019.
The unemployment rate in 91789 stands at 4.3%, which is near the national average. About 19% of workers are remote. As in most parts of the country, driving alone is the dominant commute mode at 68%.
Overall, ZIP code 91789 in Walnut, CA is characterized as upper-middle-income, highly educated, a mature community, and predominantly owner-occupied. With 40,933 residents, a median household income of $125,742, and a median home value of $936,800, it offers a clear picture of life in this part of California.