ZIP code
92860
in Norco, CaliforniaPopulation 25,109
51.27/ 100
Ranked #14,456 of 32,066 US ZIPs (top 45%)
Ranked #984 of 1,719 California ZIPs (bottom 43%)
Ranked #66 of 153 Riverside-San Bernardino-Ontario, CA ZIPs (top 43%)
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.
PFOS in drinking water
100%
at the national maximum
Lower is healthier
ST99thUS99thDefinition & source ›
The share of residents served by public water systems where PFOS, one of the most common “forever chemicals,” was detected in EPA testing.
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 ›Fine-particle (PM2.5) exceedance
2.4%
in the top 3.5% nationally
Lower is healthier
ST70thUS97thDefinition & source ›
The share of days in the year when modeled fine-particle (PM2.5) pollution was above the EPA’s daily limit of 35 micrograms per cubic meter.
Full methodology ›Outer-floodplain exposure
11.2%
in the top 3.5% nationally
Lower is healthier
ST90thUS97thDefinition & source ›
The share of this ZIP’s land area inside FEMA’s 0.2%-annual-chance flood band — the “500-year” zone, a lower but real 1-in-500 yearly chance.
Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.
Full methodology ›PFOA in drinking water
98.7%
in the top 4.4% nationally
Lower is healthier
ST96thUS96thDefinition & source ›
The share of residents served by public water systems where PFOA, one of the man-made “forever chemicals,” was detected in EPA testing.
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 ›PFAS in drinking water
100%
at the national maximum
Lower is healthier
ST99thUS99thDefinition & source ›
The share of residents served by public water systems where PFAS — man-made “forever chemicals” that build up in the body and environment instead of breaking down — were detected in EPA testing.
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 ›Dry extreme heat
63 days/year
in the top 6.9% nationally
Lower is healthier
ST77thUS93rdDefinition & source ›
The average number of days per year with a modeled daily high of at least 95 °F.
Full methodology ›Median household income
$127,780
in the top 7.5% nationally
Higher is healthier
ST78thUS93rdDefinition & source ›
The middle household income in this ZIP — half of households earn more, half earn less — in dollars per year.
Full methodology ›Air-toxics cancer risk
38.6 per million
in the top 7.6% nationally
Lower is healthier
ST58thUS92ndDefinition & source ›
The EPA’s modeled estimate of added lifetime cancer risk from breathing outdoor air toxics, in cases per million people exposed over a lifetime.
Full methodology ›The read
Norco, California (ZIP 92860), by its composite score, sits in the top 45% healthiest ZIPs nationally (14,456th) and the bottom 43% of California (984th).
The measures fall on both sides for this area, fairly evenly: household income lands in the top 7.5% nationally, and dental providers stands in the top 11.0% nationally. Pulling the other way, PFOS in drinking water registers at the national maximum, and modeled fine-particle settles in the top 3.5% nationally. Outer-floodplain exposure sits in the top 3.5% nationally, PFOA in drinking water lies in the top 4.4% nationally, and PFAS in drinking water rests at the national maximum. Modeled extreme heat resides in the top 6.9% nationally, air-toxics cancer risk is in the top 7.6% nationally, and expected annual loss lands in the top 10.9% nationally.
Next to the surrounding area, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. For anyone unfamiliar, PFOS in drinking water is a common one of the man-made "forever chemicals" that build up in the body and environment instead of breaking down. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. PFOA in drinking water is one of the man-made "forever chemicals" that build up in the body and environment instead of breaking down. For a healthier comparison close by, see ZIP 92879, 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 79%
21%
Social Need / SDOH
healthier than 63%
16%
Healthcare Access
healthier than 83%
5%
About typical
Risk Behavior
healthier than 54%
11%
Mental Health
healthier than 47%
8%
Disability
healthier than 58%
7%
Holding it back
Environmental Hazard
healthier than 5%
14%
Preventive Care
healthier than 22%
13%
Climate / Disaster Risk
healthier than 22%
5%
Lifting this score
Healthcare Access
healthier than 64%
5%
About typical
Chronic Disease Burden
healthier than 45%
21%
Social Need / SDOH
healthier than 59%
16%
Preventive Care
healthier than 44%
13%
Disability
healthier than 54%
7%
Holding it back
Environmental Hazard
healthier than 24%
14%
Risk Behavior
healthier than 30%
11%
Mental Health
healthier than 38%
8%
Climate / Disaster Risk
healthier than 20%
5%
Lifting this score
Social Need / SDOH
healthier than 77%
16%
Preventive Care
healthier than 62%
13%
Disability
healthier than 73%
7%
Healthcare Access
healthier than 64%
5%
About typical
Chronic Disease Burden
healthier than 59%
21%
Risk Behavior
healthier than 46%
11%
Mental Health
healthier than 47%
8%
Holding it back
Environmental Hazard
healthier than 9%
14%
Climate / Disaster Risk
healthier than 23%
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 ›
Findings that name this ZIP
2 of our published findings list this ZIP code. Each finding compares one published measure against a stated benchmark, and names only the ZIP codes whose estimates are reliable enough to rank. See all surprising findings.
Heavy environment, light chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 5.7 (bottom 10%); chronic-disease standing 78.8 — 73 points apart, heavier on the environment than it is on chronic illness.
Ranked #16,667 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Highest-risk tenth
Air toxics and the years between the two ends of the risk scale
Modeled air-toxics cancer risk is 38.6 cases per million — among the tenth of compared ZIP codes with the most. Estimated life expectancy is 80.2 ± 1.9 years.
Ranked #1,675 of the 4,173 ZIP codes this finding names, ordered by modeled air-toxics risk, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
91752
Californiashares a border
Score 50.39
Closest healthier
92879
Californiashares a border
Score 51.47
Similar health profile
95382
California98% similar profile
Score 52.47
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 | 24.3% | 22.1–26.5 |
| High blood pressure among adults | 33.3% | 30.5–36.2 |
| Cancer (non-skin) or melanoma among adults | 6.9% | 6.3–7.5 |
| Current asthma among adults | 9.6% | 8.6–10.8 |
| Coronary heart disease among adults | 5.8% | 5.2–6.4 |
| Chronic obstructive pulmonary disease among adults | 5.5% | 4.9–6.2 |
| Depression among adults | 22.6% | 20.1–25.3 |
| Diagnosed diabetes among adults | 11.1% | 9.9–12.5 |
| High cholesterol among adults who have ever been screened | 36.7% | 33.8–39.7 |
| Obesity among adults | 36.6% | 32.6–40.8 |
| Stroke among adults | 3.1% | 2.8–3.4 |
| All teeth lost among adults aged >=65 years | 10.5% | 8.4–12.8 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 10.8% | 9.2–12.5 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 69.0% | 65.9–72.0 |
| Visits to doctor for routine checkup within the past year among adults | 71.0% | 68.0–74.1 |
| Cholesterol screening among adults | 84.9% | 83.2–86.6 |
| Colorectal cancer screening among adults aged 45–75 years | 61.5% | 57.3–65.6 |
| Visited dentist or dental clinic in the past year among adults | 63.7% | 60.6–66.7 |
| Mammography use among women aged 50-74 years | 79.7% | 74.1–84.7 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.3% | 14.0–18.9 |
| Current cigarette smoking among adults | 12.6% | 11.0–14.5 |
| No leisure-time physical activity among adults | 24.3% | 21.5–27.4 |
| Short sleep duration among adults | 38.4% | 34.3–42.7 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 22.4% | 20.2–24.9 |
| Frequent mental distress among adults | 17.5% | 15.8–19.4 |
| Frequent physical distress among adults | 14.3% | 12.9–16.0 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 15.6% | 14.0–17.4 |
| Any disability among adults | 33.2% | 30.2–36.6 |
| Hearing disability among adults | 6.1% | 5.5–6.9 |
| Independent living disability among adults | 8.3% | 7.5–9.3 |
| Mobility disability among adults | 14.6% | 13.0–16.3 |
| Self-care disability among adults | 3.9% | 3.5–4.3 |
| Vision disability among adults | 5.2% | 4.8–5.8 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 28.0% | 25.0–31.4 |
| Food insecurity in the past 12 months among adults | 17.1% | 15.0–19.6 |
| Received food stamps in the past 12 months among adults | 14.1% | 12.2–16.3 |
| Housing insecurity in the past 12 months among adults | 15.6% | 13.7–17.8 |
| Lack of reliable transportation in the past 12 months among adults | 9.2% | 8.1–10.4 |
| Loneliness among adults | 36.1% | 32.6–39.9 |
| Utility services shut-off threat in the past 12 months among adults | 7.8% | 6.8–9.0 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 5.6% | 10.6% (3.1–25.8%) n=32,364 | 10.6% (4.1–24.9%) n=1,714 |
| Uninsured 18–64 | 8.1% | 9.0% (1.5–24.3%) n=32,286 | 7.7% (1.7–17.9%) n=1,704 |
| No HS diploma (25+) | 14.3% | 7.9% (1.8–20.7%) n=32,505 | 9.8% (1.4–30.9%) n=1,729 |
| Bachelor's or higher (25+) | 22.2% | 23.3% (9.2–53.6%) n=32,505 | 31.3% (9.9–68.2%) n=1,729 |
| Unemployment rate (16+) | 4.8% | 3.9% (0.0–9.8%) n=32,274 | 6.1% (0.8–12.0%) n=1,714 |
| Households without a vehicle | 3.0% | 3.9% (0.0–12.5%) n=32,322 | 4.5% (0.0–12.2%) n=1,708 |
| Broadband subscription | 96.1% | 89.3% (75.1–97.1%) n=32,322 | 93.4% (82.1–98.4%) n=1,708 |
| Housing cost burden (≥30% income) | 33.8% | 23.7% (10.6–40.0%) n=32,322 | 38.6% (24.4–50.5%) n=1,708 |
| Homeownership rate | 81.1% | 78.7% (51.7–94.0%) n=32,322 | 64.1% (31.9–86.4%) n=1,708 |
| Crowded housing (>1 per room) | 4.5% | 1.3% (0.0–6.3%) n=32,322 | 4.8% (0.0–15.9%) n=1,708 |
| Foreign-born population | 14.4% | 2.6% (0.0–18.6%) n=32,553 | 18.9% (3.0–40.4%) n=1,730 |
| Single-parent households | 54.8% | 53.6% (37.3–74.1%) n=32,087 | 48.4% (35.1–72.3%) n=1,692 |
| Population 65+ | 15.6% | 19.4% (10.8–33.6%) n=32,553 | 17.0% (9.7–35.7%) n=1,730 |
| Median age | 40.4 yr | 42.2 yr (33.0–56.3) n=32,292 | 40.1 yr (31.8–57.0) n=1,712 |
| Median household income | $127,780 | $72,070 ($46,039–$118,707) n=30,318 | $93,448 ($54,188–$159,562) n=1,584 |
| Median home value | $783,200 | $222,200 ($100,300–$579,820) n=30,049 | $659,800 ($300,520–$1,493,340) n=1,593 |
| Median gross rent | $1,925 | $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 | 80.1 yr ± 0.96 | 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 0.96 years of 80.1, 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