On CDC estimates, Union City is healthier than 85% of U.S. towns
Union City beats California on 20 of 32 measures CDC estimates, and trails on none.
Modeled estimates for adults 18+, CDC’s own estimate for Union City. How CDC estimates town health
What stands out about health in Union City
Against towns with similar incomes, Union City’s lead shrinks
Union City is healthier than 85% of U.S. towns, but 54% of the 4,182 towns with similar household incomes ($100K–$167K). Part of its edge is what towns with its incomes tend to have. Health Grade ↓
Obesity and COPD are less common in Union City
Union City runs below California on seven chronic conditions, most of all obesity (19% vs 27.8%), COPD (3.6% vs 5.1%) and depression (15.6% vs 20.1%). Conditions ↓
Fewer Union City adults struggle to make ends meet
Worries about food, housing, utility bills and getting around all run below California. 1 in 7 adults worry about having enough food, vs 1 in 6 adults statewide. Everyday needs ↓
Nearly everyone in Union City is insured
Only 7.3% of adults 18–64 have no health insurance, vs 10.6% across California. Checkups ↓
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 Union City’s likely range.
What’s behind Union City’s grade
On seven CDC estimates for adults, Union City is healthier than 85% of U.S. towns, #199 of 847 in California. All seven estimates beat the typical U.S. town. The strongest is obesity (fewer adults with obesity than almost every town); the weakest is diabetes, still better than 54%.
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). Union City’s median household income is $133,715; among the 4,182 U.S. towns within 25% of that ($100K–$167K), it’s healthier than 54%, about where its income would put it.
Out of every 100 Union City adults…
Union City runs below CA on 9 of 12 conditions. Tap one to see it as people.
Making ends meet
Needs that shape health as much as any doctor visit: food, housing, utilities and a way to get around.
10.3% of Union City adults receive SNAP (food stamps), compared with 15.6% across California.
Keeping up with care
Share of Union City adults getting routine care. The full ring is 100%; the dark tick marks California.
Care in and near Union City
2 community health centers in Union City, plus the nearest just outside it.
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 Union City; ≈ 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.
27 miles of trails across 25 parks and preserves
How Union City adults are doing
On 2 of 4 measures, Union City does better than California.
2 in 5 Union City 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.
Union City and the towns around it
Union City’s Health Grade ranks 2nd of 3 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 |
|---|---|---|---|---|---|
| Union City | A | 19% | 11.8% | 8.6% | CDC place |
| Fremont | A+ | 17.3% | 9.8% | 7.3% | CDC place |
| Hayward | B+ | 24.9% | 11.7% | 10.8% | CDC place |
Same-state neighbors only, ordered by length of shared border.
Living with a disability
Shown without a better/worse judgment.
of Union City adults live with a disability (California 30.4%). Walking or climbing stairs is the most common.
Every CDC estimate for Union City
Share of adults, 40 measures, with CDC’s likely range.
On the 32 measures below that have a better and a worse direction, Union City is better than California on 20 and worse on 0; on the rest, the California figure falls inside Union City’s likely range, so we call them about the same. Disability and SNAP are described, not compared as better or worse.
| Adults who… | Union City | CA | U.S. | vs CA |
|---|---|---|---|---|
| Overall health | ||||
| Fair or poor health | 17.9%16–20.1 | 22.1% | 19.4% | Better |
| Frequent physical distress (physical health not good 14+ days a month) | 10.9%9.8–12.3 | 13.4% | 13% | Better |
| Frequent mental distress (mental health not good 14+ days a month) | 13.7%12.3–15.3 | 16.4% | 15.9% | Better |
| Conditions | ||||
| Obesity | 19%15.9–22.6 | 27.8% | 32.9% | Better |
| Diabetes | 11.8%10.4–13.5 | 11.7% | 12% | About the same |
| High blood pressure | 27.7%24.9–30.8 | 30.5% | 34.4% | About the same |
| High cholesterol (adults screened in 5 years) | 35%31.7–38.5 | 35.4% | 37.1% | About the same |
| Arthritis | 17.6%15.6–19.9 | 20.8% | 25.3% | Better |
| Asthma | 7.8%6.9–8.7 | 9.3% | 9.9% | Better |
| Cancer, other than skin cancer | 5%4.5–5.5 | 6.4% | 7.9% | Better |
| Coronary heart disease | 4.7%4.2–5.2 | 5.6% | 6.4% | Better |
| COPD | 3.6%3.2–4 | 5.1% | 6.3% | Better |
| Stroke | 2.7%2.5–2.9 | 3.1% | 3.4% | Better |
| Lost all teeth (ages 65+) | 7.7%6.2–9.4 | 10.6% | 12.3% | Better |
| Habits | ||||
| Smoke cigarettes | 8.6%7.5–10 | 10.9% | 11.8% | Better |
| No exercise outside work | 22.1%19.3–25.5 | 24.6% | 24.7% | About the same |
| Binge drinking | 13.3%11.3–15.6 | 15.3% | 15.4% | About the same |
| Sleep under 7 hours | 34.5%30.6–38.7 | 35.1% | 36% | About the same |
| Checkups and coverage | ||||
| No health insurance (ages 18–64) | 7.3%6.3–8.4 | 10.6% | 11% | Better |
| Checkup in the past year | 72.7%69.5–75.9 | 71.9% | 77.4% | About the same |
| Dentist visit in the past year | 66.1%63.1–68.9 | 62.8% | 63.2% | Better |
| Cholesterol check in 5 years | 87.3%85.8–88.7 | 85.4% | 87.1% | Better |
| Taking blood pressure medicine (adults with high blood pressure) | 72%68.8–75.1 | 71.3% | 76.5% | About the same |
| Colorectal cancer screening (ages 45–75) | 59%54.5–63.3 | 57.5% | 65.5% | About the same |
| Mammogram in 2 years (women 50–74) | 75.7%69.3–81.6 | 75.7% | 76.4% | About the same |
| Mind and connection | ||||
| Ever told they have depression | 15.6%13.5–18 | 20.1% | 20.6% | Better |
| Feel lonely | 39.2%34.9–43.6 | 37.3% | 32.5% | About the same |
| Lack social and emotional support | 31.1%27.5–34.8 | 28.6% | 23.6% | About the same |
| Everyday needs | ||||
| Worried about having enough food | 14.3%12.5–16.3 | 17.9% | 15% | Better |
| Worried about keeping housing | 10.9%9.5–12.4 | 14.9% | 12% | Better |
| Threatened with a utility shut-off | 5%4.3–5.7 | 7.3% | 7.6% | Better |
| Lack reliable transportation | 7.1%6.3–8 | 9.3% | 7.9% | Better |
| Received SNAP (food stamps) | 10.3%9–11.8 | 15.6% | 11.6% | Lower |
| Disability | ||||
| Any disability | 25.7%22.9–28.9 | 30.4% | 30.1% | Lower |
| Difficulty walking or climbing stairs | 11%9.7–12.4 | 13.8% | 13.6% | Lower |
| Difficulty concentrating or remembering | 11%9.9–12.4 | 14.6% | 13.9% | Lower |
| Hearing difficulty | 5%4.4–5.6 | 5.9% | 6.7% | Lower |
| Vision difficulty | 4.4%4–4.8 | 5.6% | 5.4% | Lower |
| Difficulty doing errands alone | 5.9%5.3–6.6 | 8.1% | 7.9% | Lower |
| Difficulty dressing or bathing | 2.7%2.5–3 | 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 Union City
Is Union City a healthy place to live?
On seven CDC estimates for adults, Union City is healthier than 85% of U.S. towns: A for health, #199 of 847 in California. Among U.S. towns with similar household incomes it’s healthier than 54%. These are modeled estimates of who lives there, not a measure of local care or habits alone.
What is the obesity rate in Union City?
CDC estimates 19% of adults have obesity, likely between 15.9% and 22.6%, against 27.8% across California and 32.9% nationally.
What hospital is closest to Union City?
Washington Hospital in Fremont, 3.7 miles in a straight line from Union City’s center point, is the nearest general hospital with an emergency room; Medicare rates it 2 of 5 stars.
How many people in Union City have no health insurance?
CDC estimates 7.3% of adults ages 18–64 have no health insurance (likely 6.3–8.4%), 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 Union City more than anything measured there. At the ends of CDC’s ranges the grade could be anywhere from B+ to A.
Neighbors talk health
Doctors taking patients, urgent care, staying active in Union City.
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.