ZIP code
94520
in Concord, CaliforniaPopulation 37,381
52.12/ 100
Ranked #13,292 of 32,066 US ZIPs (top 41%)
Ranked #936 of 1,719 California ZIPs (bottom 46%)
Ranked #162 of 174 San Francisco-Oakland-Fremont, CA ZIPs (bottom 6.9%)
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.
Loud transportation noise
5.1%
in the top 1.3% nationally
Lower is healthier
ST92ndUS99thDefinition & 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 ›Subsidized affordable housing
953 units
in the top 1.6% nationally
Higher is healthier
ST96thUS98thDefinition & source ›
The number of affordable rental units in this ZIP supported by the federal Low-Income Housing Tax Credit program.
Full methodology ›Expected annual disaster loss
$1
in the top 1.8% nationally
Lower is healthier
ST88thUS98thDefinition & source ›
FEMA’s modeled estimate, in dollars per year, of the average harm to people expected from natural hazards — an annualized average, not a forecast for any single year.
Full methodology ›Crowded housing
11.5%
in the top 3.6% nationally
Lower is healthier
ST81stUS96thDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Transportation noise
15.4%
in the top 4.1% nationally
Lower is healthier
ST89thUS96thDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 55 decibels — a noticeable background presence.
Full methodology ›Housing-cost burden
46.8%
in the top 4.5% nationally
Lower is healthier
ST83rdUS96thDefinition & source ›
The share of households spending 30% or more of their income on housing.
Full methodology ›Homeownership rate
37.5%
in the bottom 4.7% nationally
Higher is healthier
ST14thUS5thDefinition & source ›
The share of occupied homes that are owned, rather than rented, by the people living in them.
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 ›Outer-floodplain exposure
7.6%
in the top 5.0% nationally
Lower is healthier
ST88thUS95thDefinition & 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 ›Mental-health provider access
0.16 per 1,000 residents
in the top 6.3% nationally
Higher is healthier
ST92ndUS94thDefinition & source ›
The number of mental-health clinics located inside this ZIP’s boundary, per 1,000 residents.
Counted from establishments located inside this ZIP’s boundary, so one just across the line is not counted. Where a ZIP has too few residents for the density to be reliable, no value is published rather than an unreliable one.
Full methodology ›The read
On balance, and by the composite measure, ZIP 94520, one of several in Concord, California ranks in the top 41% healthiest ZIPs nationally (13,292nd) and the bottom 46% of California (936th).
Neither strongly one way nor the other, the measures sit mixed: subsidized affordable housing registers in the top 1.6% nationally. Distance to an emergency room sits at the national minimum, shared with about 11% of ZIPs. Against that, modeled loud transportation noise rests in the top 1.3% nationally, modeled expected annual loss is in the top 1.8% nationally, and crowded housing stands in the top 3.6% nationally. Modeled transportation noise settles in the top 4.1% nationally, housing-cost burden lies in the top 4.5% nationally, and homeownership resides in the bottom 4.7% nationally. Modeled tree cover lands at the national minimum, and outer-floodplain exposure registers in the top 5.0% nationally.
Compared with the ZIPs it borders, expected annual loss runs far higher than the surrounding ZIPs on this measure. In plainer terms, expected annual loss is FEMA's modeled estimate, in dollars, of average yearly harm to people from natural hazards. Loud transportation noise is the modeled share of an area exposed to road, rail, and air noise at or above 65 decibels, near conversation volume. Subsidized affordable housing is the main federal tax-credit program (HUD) funding affordable rental housing, counted as local units it supports. For a healthier nearby ZIP overall, look to ZIP 94518, 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 San Francisco-Oakland-Fremont, 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 91%
21%
Healthcare Access
in the top 0.00%
5%
About typical
Social Need / SDOH
healthier than 59%
16%
Risk Behavior
healthier than 45%
11%
Mental Health
healthier than 52%
8%
Disability
healthier than 54%
7%
Climate / Disaster Risk
healthier than 56%
5%
Holding it back
Environmental Hazard
healthier than 6%
14%
Preventive Care
healthier than 7%
13%
Lifting this score
Chronic Disease Burden
healthier than 73%
21%
Healthcare Access
in the top 0.00%
5%
About typical
Social Need / SDOH
healthier than 57%
16%
Mental Health
healthier than 44%
8%
Disability
healthier than 52%
7%
Climate / Disaster Risk
healthier than 42%
5%
Holding it back
Environmental Hazard
healthier than 27%
14%
Preventive Care
healthier than 21%
13%
Risk Behavior
healthier than 24%
11%
Lifting this score
Healthcare Access
in the top 0.00%
5%
About typical
Chronic Disease Burden
healthier than 47%
21%
Holding it back
Social Need / SDOH
healthier than 16%
16%
Environmental Hazard
in the bottom 0.6%
14%
Preventive Care
healthier than 6%
13%
Risk Behavior
healthier than 6%
11%
Mental Health
healthier than 9%
8%
Disability
healthier than 9%
7%
Climate / Disaster Risk
healthier than 26%
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.
Below its nearby ZIPs
The ZIP codes that outlive their neighbors
Estimated life expectancy is 77.8 ± 1.6 years. The 47 nearest ZIP codes with estimates average 81.7 years — 3.8 years below them.
Ranked #2,932 of the 3,687 ZIP codes this finding names, ordered by years above the nearby-ZIP average, highest first.
Heavy environment, light chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 6.4 (bottom 10%); chronic-disease standing 91.2 (top 10%) — 85 points apart, heavier on the environment than it is on chronic illness.
Ranked #17,553 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
94518
Californiashares a border
Score 60.53
Closest healthier
94519
Californiashares a border
Score 57.38
Similar health profile
92879
California98% similar profile
Score 51.47
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 | 18.8% | 16.7–21.0 |
| High blood pressure among adults | 28.4% | 25.4–31.4 |
| Cancer (non-skin) or melanoma among adults | 5.1% | 4.6–5.6 |
| Current asthma among adults | 9.7% | 8.6–10.9 |
| Coronary heart disease among adults | 5.0% | 4.5–5.5 |
| Chronic obstructive pulmonary disease among adults | 5.0% | 4.5–5.6 |
| Depression among adults | 20.7% | 17.8–23.6 |
| Diagnosed diabetes among adults | 11.1% | 9.7–12.5 |
| High cholesterol among adults who have ever been screened | 32.9% | 29.6–36.2 |
| Obesity among adults | 31.6% | 26.7–36.5 |
| Stroke among adults | 2.9% | 2.7–3.1 |
| All teeth lost among adults aged >=65 years | 10.6% | 8.6–12.8 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 14.0% | 12.2–16.1 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 66.6% | 63.3–69.7 |
| Visits to doctor for routine checkup within the past year among adults | 67.6% | 63.9–71.2 |
| Cholesterol screening among adults | 82.3% | 80.5–84.3 |
| Colorectal cancer screening among adults aged 45–75 years | 58.1% | 53.4–62.7 |
| Visited dentist or dental clinic in the past year among adults | 60.7% | 57.4–63.9 |
| Mammography use among women aged 50-74 years | 73.0% | 65.8–79.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.6% | 14.0–19.4 |
| Current cigarette smoking among adults | 12.1% | 10.4–13.9 |
| No leisure-time physical activity among adults | 28.8% | 24.9–32.5 |
| Short sleep duration among adults | 37.5% | 32.8–42.4 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 23.7% | 21.1–26.3 |
| Frequent mental distress among adults | 18.3% | 16.3–20.3 |
| Frequent physical distress among adults | 13.8% | 12.3–15.4 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 16.3% | 14.5–18.1 |
| Any disability among adults | 31.2% | 27.7–34.6 |
| Hearing disability among adults | 5.5% | 4.9–6.2 |
| Independent living disability among adults | 9.0% | 8.0–9.9 |
| Mobility disability among adults | 13.1% | 11.6–14.7 |
| Self-care disability among adults | 4.0% | 3.7–4.4 |
| Vision disability among adults | 6.2% | 5.7–6.7 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 28.6% | 25.1–32.1 |
| Food insecurity in the past 12 months among adults | 21.7% | 19.0–24.5 |
| Received food stamps in the past 12 months among adults | 19.0% | 16.7–21.4 |
| Housing insecurity in the past 12 months among adults | 18.3% | 16.1–20.7 |
| Lack of reliable transportation in the past 12 months among adults | 11.5% | 10.2–12.9 |
| Loneliness among adults | 38.3% | 34.0–42.6 |
| Utility services shut-off threat in the past 12 months among adults | 9.2% | 8.0–10.5 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | CA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 12.2% | 10.6% (3.1–25.8%) n=32,364 | 10.6% (4.1–24.9%) n=1,714 |
| Uninsured 18–64 | 15.1% | 9.0% (1.5–24.3%) n=32,286 | 7.7% (1.7–17.9%) n=1,704 |
| No HS diploma (25+) | 22.0% | 7.9% (1.8–20.7%) n=32,505 | 9.8% (1.4–30.9%) n=1,729 |
| Bachelor's or higher (25+) | 29.0% | 23.3% (9.2–53.6%) n=32,505 | 31.3% (9.9–68.2%) n=1,729 |
| Unemployment rate (16+) | 5.7% | 3.9% (0.0–9.8%) n=32,274 | 6.1% (0.8–12.0%) n=1,714 |
| Households without a vehicle | 10.3% | 3.9% (0.0–12.5%) n=32,322 | 4.5% (0.0–12.2%) n=1,708 |
| Broadband subscription | 93.2% | 89.3% (75.1–97.1%) n=32,322 | 93.4% (82.1–98.4%) n=1,708 |
| Housing cost burden (≥30% income) | 46.8% | 23.7% (10.6–40.0%) n=32,322 | 38.6% (24.4–50.5%) n=1,708 |
| Homeownership rate | 37.5% | 78.7% (51.7–94.0%) n=32,322 | 64.1% (31.9–86.4%) n=1,708 |
| Crowded housing (>1 per room) | 11.5% | 1.3% (0.0–6.3%) n=32,322 | 4.8% (0.0–15.9%) n=1,708 |
| Foreign-born population | 35.6% | 2.6% (0.0–18.6%) n=32,553 | 18.9% (3.0–40.4%) n=1,730 |
| Single-parent households | 40.7% | 53.6% (37.3–74.1%) n=32,087 | 48.4% (35.1–72.3%) n=1,692 |
| Population 65+ | 11.0% | 19.4% (10.8–33.6%) n=32,553 | 17.0% (9.7–35.7%) n=1,730 |
| Median age | 35.0 yr | 42.2 yr (33.0–56.3) n=32,292 | 40.1 yr (31.8–57.0) n=1,712 |
| Median household income | $82,479 | $72,070 ($46,039–$118,707) n=30,318 | $93,448 ($54,188–$159,562) n=1,584 |
| Median home value | $601,000 | $222,200 ($100,300–$579,820) n=30,049 | $659,800 ($300,520–$1,493,340) n=1,593 |
| Median gross rent | $2,197 | $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 | 77.8 yr ± 0.80 | 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 0.80 years of 77.8, 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