Photo: Thebluewriter · CC BY-SA 4.0On CDC estimates, Diamond Bar is healthier than 86% of U.S. towns
Diamond Bar differs from California on 26 of 32 measures CDC estimates: 24 better, 2 worse.
Modeled estimates for adults 18+, CDC’s own estimate for Diamond Bar. How CDC estimates town health
What stands out about health in Diamond Bar
Obesity and COPD are less common in Diamond Bar
Diamond Bar runs below California on five chronic conditions, most of all obesity (18.2% vs 27.8%), COPD (3.6% vs 5.1%) and depression (14.6% vs 20.1%). Conditions ↓
Diamond Bar keeps up with checkups
It beats California on three of five routine checkups and screenings, including yearly checkups (75.3% vs 71.9%) and dentist visits (66.7% vs 62.8%). Checkups ↓
Fewer Diamond Bar adults struggle to make ends meet
Worries about food, housing, utility bills and getting around all run below California. 1 in 8 adults worry about having enough food, vs 1 in 6 adults statewide. Everyday needs ↓
Written from the CDC, Medicare and HRSA data on this page. CDC PLACES 2025 release: modeled estimates for adults, not counts; “higher” and “lower” mean the California figure falls outside Diamond Bar’s likely range.
What’s behind Diamond Bar’s grade
On seven CDC estimates for adults, Diamond Bar is healthier than 86% of U.S. towns, #195 of 847 in California. Obesity holds the grade up (fewer adults with obesity than almost every U.S. town); diabetes pulls it down (better than 44%).
Health estimates follow income closely across the country: towns with higher household incomes usually score higher (a correlation of 0.77 across 21,157 graded towns). Diamond Bar’s median household income is $108,281; among the 7,423 U.S. towns within 25% of that ($81K–$135K), it’s healthier than 78%, about where its income would put it.
Out of every 100 Diamond Bar adults…
Diamond Bar runs below CA on 9 of 12 conditions and above it on 1. Tap one to see it as people.
Keeping up with care
Share of Diamond Bar adults getting routine care. The full ring is 100%; the dark tick marks California.
Making ends meet
Needs that shape health as much as any doctor visit: food, housing, utilities and a way to get around.
9.3% of Diamond Bar adults receive SNAP (food stamps), compared with 15.6% across California.
Care in and near Diamond Bar
No hospital or community health center in Diamond Bar itself. These are the nearest.
Hospitals: Medicare overall star ratings, 1–5. Community health centers charge on a sliding scale by income. Distances are straight-line from the center of Diamond Bar; ≈ marks a hospital located by its town, not its street. Shortage areas: HRSA Health Professional Shortage Areas.
Everyday habits, side by side with California
Share of adults, with the California figure marked.
7 miles of trails across 12 parks and preserves
How Diamond Bar adults are doing
On 1 of 4 measures, Diamond Bar runs above California.
2 in 5 Diamond Bar adults feel lonely. A hello is a start.
Groups are the easiest way in: a walking group, a book club, your street.
If you or someone you know is struggling, call or text 988, the Suicide & Crisis Lifeline. It’s free, confidential and open 24/7.
Diamond Bar and the towns around it
Diamond Bar’s Health Grade ranks 2nd of 4 graded towns around it.
Nearby towns are shaded from CDC’s estimates for their ZIP codes, or CDC’s own figure for cities and villages.
Health next door
| Town | Health | Obesity | Diabetes | Smoking | Figures from |
|---|---|---|---|---|---|
| Diamond Bar | A | 18.2% | 12.5% | 7.8% | CDC place |
| Industry | — | — | — | — | |
| Pomona | C+ | 28.6% | 13% | 12% | CDC place |
| Rowland Heights | B+ | 18.8% | 14.4% | 9.8% | CDC place |
| Chino Hills | A | 24.9% | 10.6% | 8.5% | CDC place |
Industry: fewer than 1,000 residents. Same-state neighbors only, ordered by length of shared border.
Living with a disability
Shown without a better/worse judgment.
of Diamond Bar adults live with a disability (California 30.4%). Walking or climbing stairs is the most common.
Every CDC estimate for Diamond Bar
Share of adults, 40 measures, with CDC’s likely range.
On the 32 measures below that have a better and a worse direction, Diamond Bar is better than California on 24 and worse on 2; on the rest, the California figure falls inside Diamond Bar’s likely range, so we call them about the same. Disability and SNAP are described, not compared as better or worse.
| Adults who… | Diamond Bar | CA | U.S. | vs CA |
|---|---|---|---|---|
| Overall health | ||||
| Fair or poor health | 17.4%15.9–18.8 | 22.1% | 19.4% | Better |
| Frequent physical distress (physical health not good 14+ days a month) | 10.8%9.9–11.8 | 13.4% | 13% | Better |
| Frequent mental distress (mental health not good 14+ days a month) | 12.3%11.1–13.4 | 16.4% | 15.9% | Better |
| Conditions | ||||
| Obesity | 18.2%16.1–20.3 | 27.8% | 32.9% | Better |
| Diabetes | 12.5%11.4–13.7 | 11.7% | 12% | About the same |
| High blood pressure | 29.5%27.5–31.5 | 30.5% | 34.4% | About the same |
| High cholesterol (adults screened in 5 years) | 40.2%37.8–42.4 | 35.4% | 37.1% | Worse |
| Arthritis | 18.3%16.8–19.8 | 20.8% | 25.3% | Better |
| Asthma | 7.4%6.7–8.2 | 9.3% | 9.9% | Better |
| Cancer, other than skin cancer | 5.6%5.1–6.1 | 6.4% | 7.9% | Better |
| Coronary heart disease | 4.7%4.3–5.2 | 5.6% | 6.4% | Better |
| COPD | 3.6%3.3–4 | 5.1% | 6.3% | Better |
| Stroke | 2.8%2.6–3 | 3.1% | 3.4% | Better |
| Lost all teeth (ages 65+) | 6.4%5.2–7.7 | 10.6% | 12.3% | Better |
| Habits | ||||
| Smoke cigarettes | 7.8%6.9–8.7 | 10.9% | 11.8% | Better |
| No exercise outside work | 22%19.9–24 | 24.6% | 24.7% | Better |
| Binge drinking | 11.5%10.2–12.9 | 15.3% | 15.4% | Better |
| Sleep under 7 hours | 34.5%31.6–37.3 | 35.1% | 36% | About the same |
| Checkups and coverage | ||||
| No health insurance (ages 18–64) | 5.5%4.8–6.3 | 10.6% | 11% | Better |
| Checkup in the past year | 75.3%73.1–77.4 | 71.9% | 77.4% | Better |
| Dentist visit in the past year | 66.7%64.3–68.9 | 62.8% | 63.2% | Better |
| Cholesterol check in 5 years | 88.2%87–89.4 | 85.4% | 87.1% | Better |
| Taking blood pressure medicine (adults with high blood pressure) | 75.7%73.3–77.9 | 71.3% | 76.5% | Better |
| Colorectal cancer screening (ages 45–75) | 57.3%53.8–60.5 | 57.5% | 65.5% | About the same |
| Mammogram in 2 years (women 50–74) | 76.8%71.9–80.9 | 75.7% | 76.4% | About the same |
| Mind and connection | ||||
| Ever told they have depression | 14.6%13.1–16 | 20.1% | 20.6% | Better |
| Feel lonely | 39%36.4–41.9 | 37.3% | 32.5% | About the same |
| Lack social and emotional support | 31.6%29.2–34.3 | 28.6% | 23.6% | Worse |
| Everyday needs | ||||
| Worried about having enough food | 12.9%11.6–14.4 | 17.9% | 15% | Better |
| Worried about keeping housing | 9.6%8.6–10.8 | 14.9% | 12% | Better |
| Threatened with a utility shut-off | 4%3.5–4.6 | 7.3% | 7.6% | Better |
| Lack reliable transportation | 6.2%5.6–7 | 9.3% | 7.9% | Better |
| Received SNAP (food stamps) | 9.3%8.1–10.5 | 15.6% | 11.6% | Lower |
| Disability | ||||
| Any disability | 24.1%22.1–25.9 | 30.4% | 30.1% | Lower |
| Difficulty walking or climbing stairs | 11.2%10.1–12.2 | 13.8% | 13.6% | Lower |
| Difficulty concentrating or remembering | 10.1%9.2–11 | 14.6% | 13.9% | Lower |
| Hearing difficulty | 4.9%4.4–5.4 | 5.9% | 6.7% | Lower |
| Vision difficulty | 4.2%3.9–4.6 | 5.6% | 5.4% | Lower |
| Difficulty doing errands alone | 5.7%5.1–6.2 | 8.1% | 7.9% | Lower |
| Difficulty dressing or bathing | 2.8%2.6–3 | 3.9% | 3.8% | Lower |
Each figure is the share of adults 18+ unless the label says otherwise; small numbers after it are CDC’s likely range (95% interval). “About the same” means the California figure falls inside that range.
Questions about health in Diamond Bar
Is Diamond Bar a healthy place to live?
On seven CDC estimates for adults, Diamond Bar is healthier than 86% of U.S. towns: A for health, #195 of 847 in California. Among U.S. towns with similar household incomes it’s healthier than 78%. These are modeled estimates of who lives there, not a measure of local care or habits alone.
What is the obesity rate in Diamond Bar?
CDC estimates 18.2% of adults have obesity, likely between 16.1% and 20.3%, against 27.8% across California and 32.9% nationally.
What hospital is closest to Diamond Bar?
Pomona Valley Hospital Medical Center in Pomona, 6.5 miles in a straight line from Diamond Bar’s center point, is the nearest general hospital with an emergency room; Medicare rates it 3 of 5 stars.
How many people in Diamond Bar have no health insurance?
CDC estimates 5.5% of adults ages 18–64 have no health insurance (likely 4.8–6.3%), against 10.6% across California.
How accurate are these numbers?
They’re modeled estimates: CDC applies national survey answers to each area’s age, sex, race and education mix, so they describe who lives in Diamond Bar more than anything measured there. At the ends of CDC’s ranges the grade could be anywhere from A− to A.
Neighbors talk health
Doctors taking patients, urgent care, staying active in Diamond Bar.
Health estimates: CDC PLACES: Local Data for Better Health, 2025 release. The California figure combines its counties, weighted by adult population. Hospitals and star ratings: Medicare Care Compare (CMS). Health centers and shortage areas: HRSA. The Health Grade is our own summary of CDC’s estimates, not an official rating. Ages: U.S. Census Bureau, American Community Survey. Town boundaries: U.S. Census Bureau. This page isn’t medical advice. In an emergency, call 911.