Is Diamond Bar, CA a Good Place to Live?
Diamond Bar is a mid-sized city of 54,534 in California, with a median household income of $106,881 and a 5.2% unemployment rate. Its cost of living index is 116 (US average = 100), which is 16% above the national average.
Strengths: Diamond Bar stands out for lower-than-average crime, solid school ratings (B+), a well-educated population.
Trade-offs: Potential downsides include an above-average cost of living, high home prices, longer commutes, an elevated unemployment rate. Whether Diamond Bar is right for you depends on your priorities — the full breakdown is below.
All Diamond Bar city data on this page comes from official government sources — the US Census Bureau, FBI, NCES, BEA, and NOAA — updated annually.
Cost of Living
Index: 115.5Diamond Bar's overall cost of living index is 115.5, where 100 represents the US national average. Living in Diamond Bar costs roughly 16% more than the average American city.
| Metric | Diamond Bar, CA | National Avg |
|---|---|---|
| Median Home Value | $829,000 | $244,900 |
| Median Monthly Rent | $2,332 | $1,163 |
| Homeownership Rate | 77.4% | 65.9% |
| Median Household Income | $106,881 | $74,755 |
Crime & Safety
Very SafeDiamond Bar's violent crime rate is 78.2 per 100,000 residents — 79% lower than the national average of ~380 per 100,000.
Vertical marker = national average. Source: FBI UCR Program.
Schools & Education
Diamond Bar is served primarily by Walnut Valley Unified. The student-to-teacher ratio is 25.3:1 (slightly above the national average of ~16:1).
| Metric | Diamond Bar, CA | National Avg |
|---|---|---|
| School District | Walnut Valley Unified | — |
| Elementary Schools | 9 | — |
| Middle Schools | 3 | — |
| High Schools | 3 | — |
| Student/Teacher Ratio | 25.3:1 | 16:1 |
| Bachelor's Degree or Higher | 51.9% | 35.4% |
| High School Diploma or Higher | 92.4% | 91.1% |
Weather & Climate
Diamond Bar sees average highs of 67.9°F in January and 90.3°F in July, with 16.3 inches of annual precipitation .
| Metric | Diamond Bar, CA |
|---|---|
| Average High — January | 67.9°F |
| Average High — July | 90.3°F |
| Annual Precipitation | 16.3" |
| Annual Snowfall | Trace / None |
Demographics
| Metric | Diamond Bar, CA | National Avg |
|---|---|---|
| Population | 54,534 | — |
| Median Age | 44.7 | 38.9 |
| Unemployment Rate | 5.2% | 3.7% |
| Avg Commute Time | 34.9 min | 26 min |
| White (non-Hispanic) | 21.3% | 59.3% |
| Black or African American | 3.5% | 13.6% |
| Hispanic or Latino | 11.0% | 18.9% |
| Asian | 59.4% | 6.3% |
| Under 18 | 19.5% | 22.2% |
| 65 and over | 18.5% | 16.8% |
Nearby Cities
ZIP Codes in Diamond Bar
Diamond Bar, CA is covered by 1 ZIP code: