ZIP code
92377
in Rialto, CaliforniaPopulation 20,814
55.74/ 100
Ranked #8,590 of 32,066 US ZIPs (top 27%)
Ranked #737 of 1,719 California ZIPs (top 43%)
Ranked #34 of 153 Riverside-San Bernardino-Ontario, CA ZIPs (top 22%)
Ranks are modeled estimates — ZIPs a few hundred places apart are effectively tied.
What defines this ZIP
Metrics where this ZIP sits in the tails of the national distribution — the ones that most set it apart. Select any tile for its definition and methodology.
Lithium in drinking water
9.1 µg/L
in the bottom 1.1% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The average detected level of lithium — a natural trace metal with no federal drinking-water limit yet — across the public water systems serving this ZIP, in micrograms per liter.
Measured from EPA records for the public water systems that serve this ZIP. Households on private wells — roughly 30% of the US population — are not covered by this measure, and this figure says nothing about their water.
Full methodology ›Distance to a Superfund site
In this ZIP
at the national minimum
Higher is healthier
ST1stUS1stDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Superfund site — an abandoned or uncontrolled hazardous-waste site the EPA has listed for cleanup.
Full methodology ›Lead in tap water
0 ppb
at the national minimum
Lower is healthier
US1stDefinition & source ›
The lead level at the 90th percentile of tap-water samples reported by the public water systems serving this ZIP, in parts per billion — the EPA requires action above 15 ppb.
Measured from EPA records for the public water systems that serve this ZIP. Households on private wells — roughly 30% of the US population — are not covered by this measure, and this figure says nothing about their water.
Full methodology ›Tree cover
0.00%
at the national minimum
Higher is healthier
ST1stUS1stDefinition & source ›
The share of this ZIP’s land area covered by forest.
Full methodology ›Natural-disaster risk
in the top 7.4% nationally
Lower is healthier
ST68thUS93rdDefinition & source ›
This area’s national rank on its single highest non-flood natural hazard — such as wildfire, tornado, or earthquake — in FEMA’s modeled National Risk Index; flooding is shown separately.
Full methodology ›Hearing disability
5.0%
in the bottom 6.4% nationally
Lower is healthier
ST14thUS6thDefinition & source ›
The estimated share of adults who are deaf or have serious difficulty hearing.
Full methodology ›Crowded housing
7.2%
in the top 8.1% nationally
Lower is healthier
ST65thUS92ndDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Loneliness
37.9%
in the top 9.1% nationally
Lower is healthier
ST68thUS91stDefinition & source ›
The estimated share of adults who report feeling lonely.
Full methodology ›Industrial-pollution burden
in the top 16% nationally
Lower is healthier
ST93rdUS84thDefinition & source ›
The EPA’s modeled screening score for industrial chemical releases, weighting the amounts released by their toxicity and how many people live nearby — a relative comparison score, not a measured exposure.
Full methodology ›Homeownership rate
88.5%
in the top 21% nationally
Higher is healthier
ST92ndUS79thDefinition & source ›
The share of occupied homes that are owned, rather than rented, by the people living in them.
Full methodology ›The read
ZIP 92377, one of several in Rialto, California, by its overall standing, sits in the top 27% healthiest ZIPs nationally (8,590th) and the top 43% of California (737th).
Both sides of the picture show up plainly in this area's numbers: lithium in drinking water lies in the bottom 1.1% nationally, lead in tap water sits at the national minimum, and modeled hearing disability settles in the bottom 6.4% nationally. Modeled coronary heart disease registers in the bottom 10.9% nationally. By contrast, distance to a Superfund site stands at the national minimum, and modeled tree cover lands at the national minimum. Modeled disaster risk is in the top 7.4% nationally, and crowded housing resides in the top 8.1% nationally. Modeled loneliness rests in the top 9.1% nationally, and colon screening lies in the bottom 11.0% nationally.
Held up against its neighbors, expected annual loss runs far lower than the surrounding ZIPs on this measure. Defined in plain terms, lithium in drinking water is a natural metal that dissolves into some groundwater and has no federal drinking-water limit yet. Distance to a Superfund site is an abandoned or uncontrolled hazardous-waste site the EPA has identified for cleanup. Lead in tap water is the EPA trigger, 15 parts per billion in tap samples, above which a water system must act on lead. The nearest ZIP ranking healthier overall is ZIP 92336, just across the boundary.
What’s driving this score
Nine domains make up the ZipVitals Score — here is how this ZIP does on each, and how much each one counts. Compare it against the US, this state and the Riverside-San Bernardino-Ontario, CA metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Chronic Disease Burden
healthier than 87%
21%
Risk Behavior
healthier than 67%
11%
Mental Health
healthier than 77%
8%
Disability
healthier than 62%
7%
Healthcare Access
healthier than 62%
5%
About typical
Social Need / SDOH
healthier than 42%
16%
Environmental Hazard
healthier than 41%
14%
Climate / Disaster Risk
healthier than 42%
5%
Holding it back
Preventive Care
healthier than 14%
13%
Lifting this score
Chronic Disease Burden
healthier than 63%
21%
Environmental Hazard
healthier than 68%
14%
Mental Health
healthier than 75%
8%
About typical
Social Need / SDOH
healthier than 44%
16%
Risk Behavior
healthier than 42%
11%
Disability
healthier than 58%
7%
Holding it back
Preventive Care
healthier than 36%
13%
Climate / Disaster Risk
healthier than 34%
5%
Healthcare Access
healthier than 40%
5%
Lifting this score
Chronic Disease Burden
healthier than 82%
21%
Social Need / SDOH
healthier than 61%
16%
Risk Behavior
healthier than 62%
11%
Mental Health
healthier than 89%
8%
Disability
healthier than 79%
7%
Climate / Disaster Risk
healthier than 61%
5%
About typical
Preventive Care
healthier than 51%
13%
Holding it back
Environmental Hazard
healthier than 32%
14%
Healthcare Access
healthier than 38%
5%
“Share” is how much of this ZIP’s score the domain accounts for. Percentages are rounded; higher is healthier in every domain. How the score works, and who it compares you with ›
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
92336
Californiashares a border
Score 56.58
Closest healthier
92358
Californiaabout 0.3 mi away
Score 55.93
Similar health profile
30360
Georgia98% similar profile
Score 57.10
How these were chosen: only ZIPs with a published Score appear — a nearby ZIP with too little data to score won’t. Nearby means closest by distance between ZIP boundaries, which can cross state lines. A similar health profile is a close match across the nine Score domains, not similar demographics. Distances are measured between ZIP boundaries — ZIPs that touch share a border. How distance is measured
Evidence
Every measure this page draws on, by source. Collapsed by default — the full data stays in the page for search engines either way.
Health OutcomesCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Arthritis among adults | 21.1% | 18.9–23.3 |
| High blood pressure among adults | 31.8% | 29.0–34.6 |
| Cancer (non-skin) or melanoma among adults | 5.2% | 4.7–5.8 |
| Current asthma among adults | 10.0% | 8.8–11.1 |
| Coronary heart disease among adults | 5.1% | 4.6–5.7 |
| Chronic obstructive pulmonary disease among adults | 4.5% | 4.0–5.0 |
| Depression among adults | 18.6% | 16.2–21.1 |
| Diagnosed diabetes among adults | 11.8% | 10.4–13.2 |
| High cholesterol among adults who have ever been screened | 33.2% | 30.2–36.3 |
| Obesity among adults | 33.6% | 29.2–37.9 |
| Stroke among adults | 3.1% | 2.8–3.3 |
| All teeth lost among adults aged >=65 years | 9.9% | 8.0–12.0 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 12.9% | 11.1–14.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 69.9% | 66.8–72.7 |
| Visits to doctor for routine checkup within the past year among adults | 70.7% | 67.4–73.9 |
| Cholesterol screening among adults | 85.5% | 83.8–87.2 |
| Colorectal cancer screening among adults aged 45–75 years | 58.8% | 54.6–63.3 |
| Visited dentist or dental clinic in the past year among adults | 60.4% | 57.2–63.5 |
| Mammography use among women aged 50-74 years | 76.8% | 70.8–82.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 15.9% | 13.5–18.4 |
| Current cigarette smoking among adults | 10.6% | 9.1–12.0 |
| No leisure-time physical activity among adults | 24.1% | 21.0–27.1 |
| Short sleep duration among adults | 37.7% | 33.6–42.2 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 23.4% | 20.9–25.7 |
| Frequent mental distress among adults | 16.8% | 15.0–18.6 |
| Frequent physical distress among adults | 13.4% | 11.9–14.9 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 15.0% | 13.4–16.6 |
| Any disability among adults | 29.4% | 26.2–32.4 |
| Hearing disability among adults | 5.0% | 4.5–5.6 |
| Independent living disability among adults | 8.0% | 7.2–8.9 |
| Mobility disability among adults | 13.2% | 11.7–14.8 |
| Self-care disability among adults | 4.1% | 3.7–4.4 |
| Vision disability among adults | 6.1% | 5.5–6.6 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 30.1% | 26.8–33.6 |
| Food insecurity in the past 12 months among adults | 20.5% | 18.0–23.1 |
| Received food stamps in the past 12 months among adults | 17.6% | 15.4–19.8 |
| Housing insecurity in the past 12 months among adults | 17.6% | 15.5–20.0 |
| Lack of reliable transportation in the past 12 months among adults | 10.5% | 9.2–11.8 |
| Loneliness among adults | 37.9% | 34.1–42.0 |
| Utility services shut-off threat in the past 12 months among adults | 8.5% | 7.4–9.6 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 9.5% | 10.6% (3.1–25.8%) n=32,364 | 10.6% (4.1–24.9%) n=1,714 |
| Uninsured 18–64 | 6.0% | 9.0% (1.5–24.3%) n=32,286 | 7.7% (1.7–17.9%) n=1,704 |
| No HS diploma (25+) | 14.2% | 7.9% (1.8–20.7%) n=32,505 | 9.8% (1.4–30.9%) n=1,729 |
| Bachelor's or higher (25+) | 25.2% | 23.3% (9.2–53.6%) n=32,505 | 31.3% (9.9–68.2%) n=1,729 |
| Unemployment rate (16+) | 4.6% | 3.9% (0.0–9.8%) n=32,274 | 6.1% (0.8–12.0%) n=1,714 |
| Households without a vehicle | 0.7% | 3.9% (0.0–12.5%) n=32,322 | 4.5% (0.0–12.2%) n=1,708 |
| Broadband subscription | 95.9% | 89.3% (75.1–97.1%) n=32,322 | 93.4% (82.1–98.4%) n=1,708 |
| Housing cost burden (≥30% income) | 34.2% | 23.7% (10.6–40.0%) n=32,322 | 38.6% (24.4–50.5%) n=1,708 |
| Homeownership rate | 88.5% | 78.7% (51.7–94.0%) n=32,322 | 64.1% (31.9–86.4%) n=1,708 |
| Crowded housing (>1 per room) | 7.2% | 1.3% (0.0–6.3%) n=32,322 | 4.8% (0.0–15.9%) n=1,708 |
| Foreign-born population | 19.3% | 2.6% (0.0–18.6%) n=32,553 | 18.9% (3.0–40.4%) n=1,730 |
| Single-parent households | 47.7% | 53.6% (37.3–74.1%) n=32,087 | 48.4% (35.1–72.3%) n=1,692 |
| Population 65+ | 12.3% | 19.4% (10.8–33.6%) n=32,553 | 17.0% (9.7–35.7%) n=1,730 |
| Median age | 36.1 yr | 42.2 yr (33.0–56.3) n=32,292 | 40.1 yr (31.8–57.0) n=1,712 |
| Median household income | $116,223 | $72,070 ($46,039–$118,707) n=30,318 | $93,448 ($54,188–$159,562) n=1,584 |
| Median home value | $582,900 | $222,200 ($100,300–$579,820) n=30,049 | $659,800 ($300,520–$1,493,340) n=1,593 |
| Median gross rent | $2,716 | $1,021 ($677–$1,912) n=25,670 | $1,912 ($1,113–$2,923) n=1,461 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 80.6 yr ± 0.98 | 78.9 yr (74.7–82.8) n=31,308 | 80.5 yr (76.7–83.8) n=1,665 |
About the ± — it’s this estimate’s give-or-take (statisticians call it the standard error). The true life expectancy for this ZIP most likely falls within 0.98 years of 80.6, and it’s very unlikely to be off by more than twice that.
More ZIPs to explore ▾More ZIPs to explore ▴
How these lists were built: they draw only from ZIPs that have a published Score, so ZIPs with too little data to score are not listed. Distance-based lists use distance between ZIP boundaries with no state filter, so an out-of-state ZIP can appear. Statistically similar means a close match across the nine Score domains, not a demographic match: the measure is the cosine similarity between two ZIPs’ domain scores, taken over the domains both ZIPs have data for and only where that overlap covers at least six of the nine — and where no ZIP clears that minimum-overlap floor, that list is left out rather than filled with a weak match. How distance is measured