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Living in
Diamond Bar.
About
Life in Diamond Bar
Diamond Bar works well if you want a solidly middle-to-upper-class suburban neighborhood with real diversity and good schools, but you need to understand what you're getting into with the commute and cost. The median home price sits around $902,000 and median rent at $2,521, so this isn't cheap—you're paying for a stable, family-oriented community where about 75% of homes are owner-occupied and the median household income is over $106,000. The city is split between two well-regarded school districts (Pomona Unified and Walnut Valley Unified), and about 53% of residents have college degrees, which shapes the character of neighborhoods.
Diamond Bar at a Glance
Population, income, housing and more
Median Age
45.7 yrs
Poverty Rate
10.0%
Foreign-Born
47.3%
Broadband Internet
96.0%
of households
Population Growth
-6.0%
recent change · Census Bureau
Median household income
Demographics47.3% foreign-born, most often from China, excluding Hong Kong and Taiwan
Who lives in Diamond Bar: race and ethnicity, ages, households, languages and countries of origin
In Diamond Bar, the largest foreign-born group is from China, excluding Hong Kong and Taiwan (31.0%), and 33.3% of residents speak Chinese at home.
Under 18
19.0%
of residents
65 and Older
21.0%
of residents
Households with Kids
31.5%
anyone under 18
Living Alone
16.4%
of households
Married Couples
60.7%
of households
Avg Household Size
2.95
people
Race & Ethnicity
Hispanic or Latino of any race; other groups are non-Hispanic
Top countries of origin (foreign-born)
Languages Spoken at Home
Cost of Livingrent 24% above CA average
Rent, home values, and income in Diamond Bar
In Diamond Bar, rent runs 24% above the CA average, and home values are 23% above the CA average.
Median rent (per month)
Median home value
Rent Burdened
59.9%
spending 30%+ of income on rent
Severely Rent Burdened
36.4%
spending 50%+
Cost of Living Index
113.6
metro area (BEA) · US avg = 100
Median Property Tax
$6,634
per year, owner-occupied homes
Homeowners
77.3%
of occupied homes are owned
Typical Home Built
1980
median year built
Vacant Homes
5.1%
of housing units
Home Value Trend
Latest: $1,003,951 (September 2026)
Jobs & Economyunemployment 0.5 pts below CA average
Unemployment in Diamond Bar and typical pay across the metro area
Unemployment in Diamond Bar is 0.5 percentage points lower than the CA average.
Unemployment rate
City-level rate · BLS annual average
Unemployment Rate — 10 Year Trend
City-level (BLS) · Annual averages
What Diamond Bar Residents Do for Work · share of employed residents by industry
City residents, wherever they work
Median Salary by Occupation · metro area
Los Angeles-Long Beach-Anaheim, CA metro area
Commute33.3 min avg
How Diamond Bar residents get to work, and the nearest airports
In Diamond Bar, most residents drive alone to work (70%), and 43% get there in under 30 minutes.
How People Get to Work
Commute Time Distribution
Nearest airports · with airline service
- 12 mi
Ontario International Airport (ONT)
Medium hub3.5M passengers boarded in 2025
- 35 mi
Los Angeles International Airport (LAX)
Major hub36.5M passengers boarded in 2025
Straight-line distance. Size is the FAA’s hub category, based on passenger traffic: regional airports may have only a few flights a day.
Safetyviolent crime 62% below national average
Crime rates for 2025
Violent crime in Diamond Bar runs 62% below the national average.
Violent Crime Rate
124
per 100,000 residents
Below average (329 national, 2025)
Property Crime Rate
1,634.5
per 100,000 residents
Above average (1,552 national, 2025)
Diamond Bar Police Department
Natural DisastersHigh Wind most common — 21 events in 2025
Natural hazard risk, storms and earthquakes
FEMA National Risk Index
Very High
100.0 / 100
Compares expected losses from natural hazards, social vulnerability and community resilience against every US county (higher = more risk).
Los Angeles County, county-wide · FEMA NRI December 2025
In Los Angeles County, which includes Diamond Bar, the most common type is high wind, with 21 recorded events in 2025.
Most common events:
Storm events by year
| Year | Events | Top Type | Property Damage |
|---|---|---|---|
| 2025 | 21 | High Wind | $3,000 |
| 2024 | 27 | High Wind | $5,000 |
| 2023 | 21 | High Wind | None reported |
| 2022 | 7 | High Wind | None reported |
| 2021 | 5 | High Wind | None reported |
| 2020 | 4 | High Wind | None reported |
| 2019 | 2 | Wildfire | None reported |
| 2018 | 3 | Debris Flow | None reported |
Property damage is the National Weather Service's estimate filed with each event. “None reported” means the events were logged with $0 damage; “Not estimated” means no estimate was filed. Storms covering several counties aren't counted here, since NOAA doesn't split their damage by county.
215 earthquakes of magnitude 2.5+ within 100 miles in the past year
Los Angeles County, county-wide
Diamond Bar is less than 1% of Los Angeles County’s population, so county-wide figures may differ from local conditions.
Air Quality74 median AQI — Moderate
Days by air quality category (2025)
Air quality in Los Angeles County, which includes Diamond Bar, is typically moderate — acceptable for most people, but can affect those unusually sensitive to air pollution.
Median AQI
74
Good Days
39
per year
Moderate Days
228
per year
Unhealthy Days
32
per year
Los Angeles County, county-wide
Diamond Bar is less than 1% of Los Angeles County’s population, so county-wide figures may differ from local conditions.
Climate89°F summers, 43°F winters
30-year climate averages (1991–2020) — monthly temperatures and precipitation
Diamond Bar has warm summers (avg high 89°F) and mild winters (avg low 43°F).
Spring (Mar–May)
75°/50°F
avg high / low
Summer (Jun–Aug)
89°/61°F
avg high / low
Fall (Sep–Nov)
81°/54°F
avg high / low
Winter (Dec–Feb)
67°/43°F
avg high / low
Annual Precipitation
16.3"
Annual Snowfall
0.0"
Hot Days/Year
71
days above 90°F
Freeze Days/Year
3
days below 32°F
Rainy Days/Year
31
Average month
Show month-by-month table ↓Hide table ↑
| Month | High | Low | Precip |
|---|---|---|---|
| Jan | 68°F | 43°F | 2.91" |
| Feb | 67°F | 45°F | 4.15" |
| Mar | 72°F | 47°F | 2.12" |
| Apr | 76°F | 50°F | 0.97" |
| May | 78°F | 54°F | 0.22" |
| Jun | 84°F | 57°F | 0.06" |
| Jul | 90°F | 62°F | 0.00" |
| Aug | 92°F | 63°F | 0.03" |
| Sep | 89°F | 60°F | 0.01" |
| Oct | 81°F | 54°F | 0.97" |
| Nov | 74°F | 47°F | 0.74" |
| Dec | 67°F | 42°F | 2.29" |
Healthcare
Hospitals, ratings, and health insurance in Diamond Bar
Uninsured
3.4%
of residents
No hospitals inside Diamond Bar's limits — nearest hospitals · within 15 miles
Pomona Valley Hospital Medical Center
Acute Care Hospitals · ER available · 6.6 mi away · Pomona
San Dimas Community Hospital
Acute Care Hospitals · ER available · 7 mi away · San Dimas
Canyon Ridge Hospital
Psychiatric · 7.4 mi away · Chino
Adult Health · vs. the typical US place
Share of adults. Modeled estimates, not counted cases. “US” = the typical US place.
Medicare-certified hospitals only. Doesn’t include clinics, urgent care, or freestanding ERs.
Education25.2:1 student/teacher ratio
Schools and degree attainment in Diamond Bar
Diamond Bar's student/teacher ratio is 25.2:1 (higher than the national average of 16:1), and 52.8% of adults 25+ hold a bachelor's degree or higher.
Public Schools
13
within city limits
Private Schools
8
within city limits
College Degree Rate
52.8%
adults 25+ with bachelor's or higher
Student/Teacher Ratio
25.2:1
National avg 16:1
Schools located within city limits (2023) — school-level metrics change slowly year to year
Colleges Near Diamond Bar (within 15 miles)
California State University-Fullerton
9 mi awayPublic · 4-year · 38,546 students · in-state tuition $7,952 · 80% graduate · median earnings $69,015 (10 yrs after entry)
Public · 2-year · 26,140 students · in-state tuition $1,364 · 35% graduate · median earnings $49,600 (10 yrs after entry)
Public · 2-year · 17,121 students · in-state tuition $1,150 · 28% graduate · median earnings $49,216 (10 yrs after entry)
Public · 2-year · 10,579 students · in-state tuition $1,160 · 26% graduate · median earnings $52,421 (10 yrs after entry)
Private nonprofit · 4-year · 7,478 students · in-state tuition $67,894 · 82% graduate · median earnings $80,694 (10 yrs after entry)
Private nonprofit · 4-year · 3,474 students · in-state tuition $50,904 · 69% graduate · median earnings $64,126 (10 yrs after entry)
Degree-granting colleges with 100+ students, placed by campus location (main campuses only — branch campuses are reported under their parent school)
Parks & Recreationclosest: Juan Bautista de Anza National Historic Trail, 35 mi
Nearby national parks, recreation areas and public libraries for Diamond Bar
Diamond Bar has 4 nearby national parks or recreation areas, closest being Juan Bautista de Anza National Historic Trail (35 mi away).
Nearby National Parks & Recreation Areas
Juan Bautista de Anza National Historic Trail
National Historic Trail
35 mi awaySanta Monica Mountains National Recreation Area
National Recreation Area
55 mi awayCésar E. Chávez National Monument
National Monument
95 mi awayCabrillo National Monument
National Monument
97 mi awayPublic Libraries in Diamond Bar
Diamond Bar Library
21800 Copley Dr., Diamond Bar
Cities Near Diamond Bar
The closest cities within 60 miles
Planning a move to Diamond Bar?
Read our full moving guide — what it's really like to live here.
Diamond Bar FAQ
Is Diamond Bar, California affordable?⌄
Diamond Bar's median rent is $2,521/month, which is significantly above the national average. The median household income is $108,281/year. Median home value is $902,200.
Is Diamond Bar, California safe?⌄
Diamond Bar's violent crime rate was 124 per 100,000 residents in 2025, which is well below the national average — one of the safer cities in the country of 329/100k that year. Property crime rate is 1635 per 100,000. As with any city, crime rates vary by neighborhood.
What is the job market like in Diamond Bar, California?⌄
Diamond Bar has an unemployment rate of 5.0%, which is slightly above the national average of 4.3%.
What is the cost of living in Diamond Bar, California?⌄
The cost of living in Diamond Bar is primarily driven by housing. Median rent is $2,521/month and median household income is $108,281/year. The median home value is $902,200. About 60% of renters spend more than 30% of their income on housing.
How is the commute in Diamond Bar, California?⌄
The average commute in Diamond Bar is 33 minutes, which is longer than average compared to the national average of 26 minutes.
Data from the US Census Bureau, BLS, FBI, NOAA, EPA, Zillow Research and other public sources. Where our data comes from