ZIP code
99110
in Clayton, WashingtonPopulation 1,505
50.96/ 100
Ranked #14,908 of 32,066 US ZIPs (top 46%)
Ranked #376 of 581 Washington ZIPs (bottom 35%)
Ranked #31 of 57 Spokane-Spokane Valley, WA ZIPs (bottom 46%)
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.
Fine-particle (PM2.5) exceedance
2.4%
in the top 3.4% nationally
Lower is healthier
ST90thUS97thDefinition & 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 ›Mammography
66.3%
in the bottom 4.4% nationally
Higher is healthier
ST8thUS4thDefinition & source ›
The estimated share of women aged 50–74 who had a mammogram within the past two years.
Full methodology ›Distance to a nursing home
15.1 mi
in the top 5.3% nationally
Lower is healthier
ST85thUS95thDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Medicare- or Medicaid-certified nursing home.
Full methodology ›Loud transportation noise
2.3%
in the top 5.9% nationally
Lower is healthier
ST96thUS94thDefinition & 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 ›Humid extreme heat
9.1 days/year
in the bottom 6.2% nationally
Lower is healthier
ST41stUS6thDefinition & source ›
The average number of days per year when modeled heat stress — temperature, humidity, sun, and wind combined — reaches levels hard on the body outdoors.
Full methodology ›Poverty rate
2.3%
in the bottom 7.5% nationally
Lower is healthier
ST5thUS7thDefinition & source ›
The share of residents whose income is below the federal poverty line, from the Census Bureau’s American Community Survey.
Full methodology ›Distance to a hazardous-chemical facility
15.3 mi
in the top 7.9% nationally
Higher is healthier
ST91stUS92ndDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest facility that handles enough hazardous chemicals to require an EPA risk-management plan for accidental releases.
Full methodology ›Distance to an emergency room
15.9 mi
in the top 9.8% nationally
Lower is healthier
ST91stUS90thDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Medicare-certified hospital with an emergency room.
Full methodology ›Fatal road crashes
26.6 per 100,000 residents per year
in the top 17% nationally
Lower is healthier
ST91stUS83rdDefinition & source ›
The annual rate of fatal road crashes per 100,000 residents, pooled over a ten-year window.
A rate per resident population. Where a ZIP has too few residents for the rate to be reliable — about 30% of US ZIPs — no value is published rather than an unstable one; those ZIPs are absent from this comparison, not counted as crash-free.
Full methodology ›Radon
2.4 pCi/L
in the top 23% nationally
Lower is healthier
ST95thUS77thDefinition & source ›
The modeled typical indoor radon level for this area, in picocuries per liter — the EPA recommends fixing a home at 4 pCi/L or above.
Modeled from indoor-radon measurements. In Alaska and Hawaii, where those measurements are not published, a US Geological Survey geologic radon-potential category stands in — a coarser input, disclosed rather than hidden.
Full methodology ›The read
Clayton, Washington (ZIP 99110), by its overall standing, sits in the top 46% healthiest ZIPs nationally (14,908th) and the bottom 35% of Washington (376th), based on limited data; treat as directional.
The data is generous to this ZIP in several places worth naming: modeled humid heat lies in the bottom 6.2% nationally. Unemployment sits at the national minimum, shared with about 15% of ZIPs. Poverty settles in the bottom 7.5% nationally, and distance to a hazardous-chemical facility registers in the top 7.9% nationally. Households without a vehicle stands at the national minimum, shared with about 16% of ZIPs. Working the other way, modeled fine-particle lands in the top 3.4% nationally, and mammography is in the bottom 4.4% nationally. Distance to a nursing home resides in the top 5.3% nationally, and modeled loud transportation noise rests in the top 5.9% nationally. Fiber broadband lies at the national minimum, shared with about 19% of ZIPs.
Defined in plain terms, fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. Distance to a hazardous-chemical facility is a plant handling large amounts of hazardous chemicals that must file an EPA risk-management plan for accidental releases. 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. The nearest ZIP ranking healthier overall is ZIP 99026, about 3.1 miles away.
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 Spokane-Spokane Valley, WA metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Social Need / SDOH
healthier than 64%
16%
Risk Behavior
healthier than 82%
11%
Climate / Disaster RiskPartial
healthier than 98%
5%
About typical
Chronic Disease Burden
healthier than 54%
21%
Mental Health
healthier than 40%
8%
Disability
healthier than 56%
7%
Holding it back
Environmental Hazard
healthier than 15%
14%
Preventive Care
healthier than 17%
13%
Healthcare Access
healthier than 25%
5%
Lifting this score
Climate / Disaster RiskPartial
healthier than 89%
5%
About typical
Risk Behavior
healthier than 43%
11%
Mental Health
healthier than 60%
8%
Holding it back
Chronic Disease Burden
healthier than 27%
21%
Social Need / SDOH
healthier than 23%
16%
Environmental Hazard
healthier than 18%
14%
Preventive Care
healthier than 28%
13%
Disability
healthier than 30%
7%
Healthcare Access
healthier than 22%
5%
Lifting this score
Environmental Hazard
healthier than 68%
14%
Mental Health
healthier than 80%
8%
Climate / Disaster RiskPartial
in the top 0.00%
5%
About typical
Risk Behavior
healthier than 51%
11%
Holding it back
Chronic Disease Burden
healthier than 11%
21%
Social Need / SDOH
healthier than 27%
16%
Preventive Care
healthier than 20%
13%
Disability
healthier than 25%
7%
Healthcare Access
healthier than 8%
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
99006
Washingtonshares a border
Score 49.06
Closest healthier
99026
Washingtonabout 3.1 mi away
Score 55.02
Similar health profile
99032
Washington94% similar profile
Score 50.47
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 | 31.5% | 29.0–34.3 |
| High blood pressure among adults | 33.5% | 30.7–36.6 |
| Cancer (non-skin) or melanoma among adults | 10.2% | 9.3–11.0 |
| Current asthma among adults | 12.1% | 10.9–13.4 |
| Coronary heart disease among adults | 7.0% | 6.2–7.9 |
| Chronic obstructive pulmonary disease among adults | 7.2% | 6.1–8.3 |
| Depression among adults | 25.2% | 22.6–28.1 |
| Diagnosed diabetes among adults | 10.6% | 9.3–12.1 |
| High cholesterol among adults who have ever been screened | 35.9% | 33.1–38.9 |
| Obesity among adults | 33.2% | 29.3–37.7 |
| Stroke among adults | 3.7% | 3.3–4.1 |
| All teeth lost among adults aged >=65 years | 13.7% | 11.4–16.1 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.3% | 5.8–8.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 72.6% | 69.6–75.4 |
| Visits to doctor for routine checkup within the past year among adults | 71.8% | 68.9–74.7 |
| Cholesterol screening among adults | 84.2% | 82.0–85.9 |
| Colorectal cancer screening among adults aged 45–75 years | 64.6% | 61.1–67.9 |
| Visited dentist or dental clinic in the past year among adults | 64.7% | 61.9–67.4 |
| Mammography use among women aged 50-74 years | 66.3% | 60.0–72.0 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.7% | 14.5–19.1 |
| Current cigarette smoking among adults | 13.0% | 11.0–15.3 |
| No leisure-time physical activity among adults | 19.4% | 16.6–22.7 |
| Short sleep duration among adults | 31.3% | 27.9–35.0 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 18.1% | 15.7–20.9 |
| Frequent mental distress among adults | 16.4% | 14.6–18.4 |
| Frequent physical distress among adults | 14.6% | 12.9–16.5 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 14.7% | 12.9–16.8 |
| Any disability among adults | 31.5% | 28.1–35.4 |
| Hearing disability among adults | 8.1% | 7.2–9.0 |
| Independent living disability among adults | 8.2% | 7.2–9.4 |
| Mobility disability among adults | 14.3% | 12.4–16.4 |
| Self-care disability among adults | 3.8% | 3.3–4.4 |
| Vision disability among adults | 4.6% | 4.0–5.2 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 2.3% | 10.6% (3.1–25.8%) n=32,364 | 9.6% (3.5–22.3%) n=583 |
| Uninsured 18–64 | 27.1% | 9.0% (1.5–24.3%) n=32,286 | 8.2% (1.8–22.7%) n=582 |
| No HS diploma (25+) | 6.9% | 7.9% (1.8–20.7%) n=32,505 | 7.0% (1.5–16.5%) n=588 |
| Bachelor's or higher (25+) | 22.5% | 23.3% (9.2–53.6%) n=32,505 | 27.4% (12.3–59.7%) n=588 |
| Unemployment rate (16+) | 0.0% | 3.9% (0.0–9.8%) n=32,274 | 4.5% (0.0–9.7%) n=584 |
| Households without a vehicle | 0.0% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.2%) n=580 |
| Broadband subscription | 83.6% | 89.3% (75.1–97.1%) n=32,322 | 92.7% (81.1–97.4%) n=580 |
| Housing cost burden (≥30% income) | 16.8% | 23.7% (10.6–40.0%) n=32,322 | 28.9% (14.6–40.6%) n=580 |
| Homeownership rate | 81.5% | 78.7% (51.7–94.0%) n=32,322 | 75.2% (48.2–91.7%) n=580 |
| Crowded housing (>1 per room) | 5.2% | 1.3% (0.0–6.3%) n=32,322 | 2.6% (0.0–7.9%) n=580 |
| Foreign-born population | 0.0% | 2.6% (0.0–18.6%) n=32,553 | 6.7% (0.3–27.6%) n=588 |
| Single-parent households | 53.7% | 53.6% (37.3–74.1%) n=32,087 | 54.3% (40.5–76.0%) n=574 |
| Population 65+ | 17.9% | 19.4% (10.8–33.6%) n=32,553 | 18.9% (10.3–36.9%) n=588 |
| Median age | 32.4 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.0 yr (32.9–58.8) n=584 |
| Median household income | $76,106 | $72,070 ($46,039–$118,707) n=30,318 | $84,646 ($56,217–$132,145) n=547 |
| Median home value | $453,100 | $222,200 ($100,300–$579,820) n=30,049 | $452,750 ($241,540–$826,380) n=542 |
| Median gross rent | $954 | $1,021 ($677–$1,912) n=25,670 | $1,416 ($840–$2,197) n=476 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 77.3 yr ± 1.61 | 78.9 yr (74.7–82.8) n=31,308 | 80.2 yr (77.3–83.1) n=584 |
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 1.61 years of 77.3, 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