ZIP code
91763
in Montclair, CaliforniaPopulation 37,700
45.59/ 100
Ranked #21,786 of 32,066 US ZIPs (bottom 32%)
Ranked #1,290 of 1,719 California ZIPs (bottom 25%)
Ranked #101 of 153 Riverside-San Bernardino-Ontario, CA ZIPs (bottom 34%)
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.
Colon-cancer screening
50.4%
in the bottom 2.2% nationally
Higher is healthier
ST11thUS2ndDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›Lithium in drinking water
9.3 µg/L
in the bottom 2.2% nationally
Lower is healthier
ST2ndUS2ndDefinition & 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 ›Crowded housing
14.6%
in the top 2.3% nationally
Lower is healthier
ST88thUS98thDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Loud transportation noise
3.4%
in the top 3.0% nationally
Lower is healthier
ST81stUS97thDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 65 decibels — around the volume of normal conversation.
Full methodology ›Fine-particle (PM2.5) exceedance
2.3%
in the top 3.5% nationally
Lower is healthier
ST69thUS97thDefinition & 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 ›Uninsured (under 65)
19.1%
in the top 5.3% nationally
Lower is healthier
ST90thUS95thDefinition & source ›
The estimated share of adults aged 18–64 with no current health-insurance coverage.
Full methodology ›Air-toxics cancer risk
40 per million
in the top 4.5% nationally
Lower is healthier
ST73rdUS96thDefinition & 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 ›Loneliness
39.8%
in the top 4.5% nationally
Lower is healthier
ST82ndUS96thDefinition & source ›
The estimated share of adults who report feeling lonely.
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 ›PFOS in drinking water
96.6%
in the top 5.9% nationally
Lower is healthier
ST91stUS94thDefinition & 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 ›The read
Overall, Montclair, California (ZIP 91763) lands in the bottom 32% nationally (21,786th) and the bottom 25% of California (1,290th).
Where the load on this area runs deepest, the data leads: modeled colon screening lies in the bottom 2.2% nationally, and crowded housing lands in the top 2.3% nationally. Modeled loud transportation noise sits in the top 3.0% nationally, and fine-particle is in the top 3.5% nationally. Modeled uninsured settles in the top 5.3% nationally, air-toxics cancer risk resides in the top 4.5% nationally, and loneliness registers in the top 4.5% nationally. Modeled tree cover rests at the national minimum. More encouragingly, lithium in drinking water stands in the bottom 2.2% nationally. Distance to an emergency room lies at the national minimum, shared with about 11% of ZIPs.
A note on the terms: lithium in drinking water is a natural metal that dissolves into some groundwater and has no federal drinking-water limit yet. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. Air-toxics cancer risk is a modeled EPA estimate of added lifetime cancer risk from breathing outdoor air, per million people. For a healthier nearby comparison, ZIP 91762, just across the boundary, ranks better overall.
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 84%
21%
Mental Health
healthier than 65%
8%
Healthcare Access
in the top 0.00%
5%
About typical
Risk Behavior
healthier than 42%
11%
Holding it back
Social Need / SDOH
healthier than 15%
16%
Environmental Hazard
healthier than 6%
14%
Preventive Care
healthier than 3%
13%
Disability
healthier than 29%
7%
Climate / Disaster Risk
healthier than 22%
5%
Lifting this score
Mental Health
healthier than 60%
8%
Healthcare Access
in the top 0.00%
5%
About typical
Chronic Disease Burden
healthier than 55%
21%
Holding it back
Social Need / SDOH
healthier than 21%
16%
Environmental Hazard
healthier than 25%
14%
Preventive Care
healthier than 10%
13%
Risk Behavior
healthier than 22%
11%
Disability
healthier than 28%
7%
Climate / Disaster Risk
healthier than 20%
5%
Lifting this score
Chronic Disease Burden
healthier than 72%
21%
Mental Health
healthier than 77%
8%
Healthcare Access
in the top 0.00%
5%
Holding it back
Social Need / SDOH
healthier than 38%
16%
Environmental Hazard
healthier than 11%
14%
Preventive Care
healthier than 13%
13%
Risk Behavior
healthier than 36%
11%
Disability
healthier than 38%
7%
Climate / Disaster Risk
healthier than 22%
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 5.9 (bottom 10%); chronic-disease standing 84.0 — 78 points apart, heavier on the environment than it is on chronic illness.
Ranked #17,055 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 40.0 cases per million — among the tenth of compared ZIP codes with the most. Estimated life expectancy is 80.9 ± 1.8 years.
Ranked #504 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
91762
Californiashares a border
Score 48.06
Closest healthier
91766
Californiashares a border
Score 48.40
Similar health profile
85035
Arizona99% similar profile
Score 40.72
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 | 20.3% | 18.3–22.4 |
| High blood pressure among adults | 31.5% | 28.6–34.3 |
| Cancer (non-skin) or melanoma among adults | 4.6% | 4.1–5.0 |
| Current asthma among adults | 9.6% | 8.5–10.7 |
| Coronary heart disease among adults | 5.7% | 5.1–6.3 |
| Chronic obstructive pulmonary disease among adults | 5.2% | 4.6–5.7 |
| Depression among adults | 18.9% | 16.5–21.4 |
| Diagnosed diabetes among adults | 13.3% | 11.8–14.9 |
| High cholesterol among adults who have ever been screened | 34.2% | 31.1–37.2 |
| Obesity among adults | 34.1% | 29.8–38.4 |
| Stroke among adults | 3.3% | 3.0–3.5 |
| All teeth lost among adults aged >=65 years | 13.8% | 11.4–16.6 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 19.1% | 16.7–21.5 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 67.7% | 64.6–70.5 |
| Visits to doctor for routine checkup within the past year among adults | 68.1% | 64.7–71.4 |
| Cholesterol screening among adults | 81.5% | 79.6–83.5 |
| Colorectal cancer screening among adults aged 45–75 years | 50.4% | 46.1–54.9 |
| Visited dentist or dental clinic in the past year among adults | 50.5% | 47.3–53.9 |
| Mammography use among women aged 50-74 years | 71.4% | 64.9–77.9 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 14.9% | 12.7–17.3 |
| Current cigarette smoking among adults | 13.1% | 11.4–14.8 |
| No leisure-time physical activity among adults | 30.7% | 27.2–34.3 |
| Short sleep duration among adults | 39.0% | 34.8–43.5 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 29.8% | 27.1–32.6 |
| Frequent mental distress among adults | 18.1% | 16.2–20.1 |
| Frequent physical distress among adults | 15.6% | 14.0–17.3 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 18.2% | 16.4–20.1 |
| Any disability among adults | 34.3% | 30.9–37.7 |
| Hearing disability among adults | 5.9% | 5.2–6.6 |
| Independent living disability among adults | 10.0% | 9.0–11.0 |
| Mobility disability among adults | 15.7% | 14.0–17.4 |
| Self-care disability among adults | 5.1% | 4.7–5.6 |
| Vision disability among adults | 8.4% | 7.7–9.1 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 32.5% | 29.2–36.2 |
| Food insecurity in the past 12 months among adults | 29.4% | 26.2–32.6 |
| Received food stamps in the past 12 months among adults | 25.6% | 22.7–28.5 |
| Housing insecurity in the past 12 months among adults | 22.7% | 20.1–25.4 |
| Lack of reliable transportation in the past 12 months among adults | 14.0% | 12.4–15.6 |
| Loneliness among adults | 39.8% | 36.0–43.9 |
| Utility services shut-off threat in the past 12 months among adults | 10.8% | 9.5–12.3 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 17.5% | 10.6% (3.1–25.8%) n=32,364 | 10.6% (4.1–24.9%) n=1,714 |
| Uninsured 18–64 | 13.9% | 9.0% (1.5–24.3%) n=32,286 | 7.7% (1.7–17.9%) n=1,704 |
| No HS diploma (25+) | 25.3% | 7.9% (1.8–20.7%) n=32,505 | 9.8% (1.4–30.9%) n=1,729 |
| Bachelor's or higher (25+) | 19.0% | 23.3% (9.2–53.6%) n=32,505 | 31.3% (9.9–68.2%) n=1,729 |
| Unemployment rate (16+) | 6.7% | 3.9% (0.0–9.8%) n=32,274 | 6.1% (0.8–12.0%) n=1,714 |
| Households without a vehicle | 4.8% | 3.9% (0.0–12.5%) n=32,322 | 4.5% (0.0–12.2%) n=1,708 |
| Broadband subscription | 92.6% | 89.3% (75.1–97.1%) n=32,322 | 93.4% (82.1–98.4%) n=1,708 |
| Housing cost burden (≥30% income) | 42.6% | 23.7% (10.6–40.0%) n=32,322 | 38.6% (24.4–50.5%) n=1,708 |
| Homeownership rate | 55.6% | 78.7% (51.7–94.0%) n=32,322 | 64.1% (31.9–86.4%) n=1,708 |
| Crowded housing (>1 per room) | 14.6% | 1.3% (0.0–6.3%) n=32,322 | 4.8% (0.0–15.9%) n=1,708 |
| Foreign-born population | 30.9% | 2.6% (0.0–18.6%) n=32,553 | 18.9% (3.0–40.4%) n=1,730 |
| Single-parent households | 37.1% | 53.6% (37.3–74.1%) n=32,087 | 48.4% (35.1–72.3%) n=1,692 |
| Population 65+ | 12.0% | 19.4% (10.8–33.6%) n=32,553 | 17.0% (9.7–35.7%) n=1,730 |
| Median age | 33.5 yr | 42.2 yr (33.0–56.3) n=32,292 | 40.1 yr (31.8–57.0) n=1,712 |
| Median household income | $78,770 | $72,070 ($46,039–$118,707) n=30,318 | $93,448 ($54,188–$159,562) n=1,584 |
| Median home value | $570,100 | $222,200 ($100,300–$579,820) n=30,049 | $659,800 ($300,520–$1,493,340) n=1,593 |
| Median gross rent | $1,899 | $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 | 80.8 yr ± 0.91 | 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 0.91 years of 80.8, 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