ZIP code
98354
in Milton, WashingtonPopulation 8,597
52.32/ 100
Ranked #13,010 of 32,066 US ZIPs (top 41%)
Ranked #333 of 581 Washington ZIPs (bottom 43%)
Ranked #139 of 166 Seattle-Tacoma-Bellevue, WA ZIPs (bottom 16%)
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.
Humid extreme heat
4.4 days/year
in the bottom 2.7% nationally
Lower is healthier
ST16thUS3rdDefinition & 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 ›Natural-disaster risk
in the top 3.3% nationally
Lower is healthier
ST87thUS97thDefinition & 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 ›Child-care access
0.73 per 1,000 residents
in the top 4.8% nationally
Higher is healthier
ST97thUS95thDefinition & source ›
The number of child day-care services 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 ›Lead in tap water
6.6 ppb
in the top 6.6% nationally
Lower is healthier
US93rdDefinition & 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 ›Housing-cost burden
41.4%
in the top 8.6% nationally
Lower is healthier
ST91stUS91stDefinition & source ›
The share of households spending 30% or more of their income on housing.
Full methodology ›Outer-floodplain exposure
3.9%
in the top 9.0% nationally
Lower is healthier
ST97thUS91stDefinition & 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 ›Radon
0.9 pCi/L
in the bottom 16% nationally
Lower is healthier
ST6thUS16thDefinition & 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
By the composite health measure, Milton, Washington (ZIP 98354) ranks in the top 41% healthiest ZIPs nationally (13,010th) and the bottom 43% of Washington (333rd).
The measures that set this area apart are worth putting up front: modeled humid heat sits in the bottom 2.7% nationally, and childcare is in the top 4.8% nationally. Transit settles in the top 11.2% nationally, and modeled energy burden resides in the bottom 10.6% nationally. Set against that, modeled disaster risk registers in the top 3.3% nationally, lead in tap water rests in the top 6.6% nationally, and housing-cost burden stands in the top 8.6% nationally. Outer-floodplain exposure lies in the top 9.0% nationally, slow internet speeds lands in the top 10.4% nationally, and homeownership sits in the bottom 12.5% nationally.
Read against the ZIPs closest to it, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. To spell things out, disaster risk is the area's national rank on its highest non-flood peril in FEMA's modeled Risk Index, like wildfire or quake. Lead in tap water is the EPA trigger, 15 parts per billion in tap samples, above which a water system must act on lead. Humid heat is a modeled heat-stress measure combining temperature, humidity, sun, and wind to gauge heat on the body outdoors. Close by, ZIP 98001, just across the boundary, ranks healthier 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 Seattle-Tacoma-Bellevue, WA 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 67%
21%
Social Need / SDOH
healthier than 83%
16%
Risk Behavior
healthier than 73%
11%
Climate / Disaster Risk
healthier than 87%
5%
About typical
Environmental Hazard
healthier than 42%
14%
Disability
healthier than 58%
7%
Healthcare Access
healthier than 56%
5%
Holding it back
Preventive Care
healthier than 17%
13%
Mental Health
healthier than 17%
8%
Nothing measured is lifting this score.
About typical
Chronic Disease Burden
healthier than 43%
21%
Social Need / SDOH
healthier than 56%
16%
Environmental Hazard
healthier than 41%
14%
Climate / Disaster Risk
healthier than 55%
5%
Healthcare Access
healthier than 44%
5%
Holding it back
Preventive Care
healthier than 28%
13%
Risk Behavior
healthier than 27%
11%
Mental Health
healthier than 24%
8%
Disability
healthier than 34%
7%
Nothing measured is lifting this score.
About typical
Environmental Hazard
healthier than 46%
14%
Climate / Disaster Risk
healthier than 45%
5%
Holding it back
Chronic Disease Burden
healthier than 13%
21%
Social Need / SDOH
healthier than 28%
16%
Preventive Care
healthier than 28%
13%
Risk Behavior
healthier than 25%
11%
Mental Health
healthier than 23%
8%
Disability
healthier than 10%
7%
Healthcare Access
healthier than 20%
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
98001
Washingtonshares a border
Score 58.90
Closest healthier
98003
Washingtonshares a border
Score 55.87
Similar health profile
98662
Washington99% 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 | 28.0% | 26.3–29.5 |
| High blood pressure among adults | 33.7% | 31.8–35.5 |
| Cancer (non-skin) or melanoma among adults | 8.7% | 8.0–9.4 |
| Current asthma among adults | 11.2% | 10.2–12.0 |
| Coronary heart disease among adults | 6.0% | 5.4–6.6 |
| Chronic obstructive pulmonary disease among adults | 6.0% | 5.2–6.8 |
| Depression among adults | 27.2% | 25.2–29.2 |
| Diagnosed diabetes among adults | 10.7% | 9.7–11.7 |
| High cholesterol among adults who have ever been screened | 37.1% | 35.2–38.9 |
| Obesity among adults | 34.9% | 32.0–37.6 |
| Stroke among adults | 3.4% | 3.0–3.7 |
| All teeth lost among adults aged >=65 years | 11.0% | 9.7–12.4 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 8.6% | 7.2–10.3 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 71.8% | 69.9–73.7 |
| Visits to doctor for routine checkup within the past year among adults | 71.2% | 69.1–73.4 |
| Cholesterol screening among adults | 83.5% | 81.7–85.2 |
| Colorectal cancer screening among adults aged 45–75 years | 64.8% | 62.4–67.0 |
| Visited dentist or dental clinic in the past year among adults | 64.1% | 62.0–66.1 |
| Mammography use among women aged 50-74 years | 69.7% | 65.8–73.2 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.4% | 14.9–18.0 |
| Current cigarette smoking among adults | 12.0% | 10.3–13.8 |
| No leisure-time physical activity among adults | 19.6% | 17.4–22.0 |
| Short sleep duration among adults | 36.2% | 33.8–38.6 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 18.1% | 16.1–20.3 |
| Frequent mental distress among adults | 18.3% | 16.8–19.8 |
| Frequent physical distress among adults | 14.5% | 13.1–15.9 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 16.1% | 14.4–17.9 |
| Any disability among adults | 32.5% | 29.9–35.2 |
| Hearing disability among adults | 7.4% | 6.7–8.1 |
| Independent living disability among adults | 8.2% | 7.2–9.2 |
| Mobility disability among adults | 13.1% | 11.7–14.6 |
| Self-care disability among adults | 3.6% | 3.2–4.0 |
| Vision disability among adults | 4.7% | 4.2–5.2 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 10.5% | 10.6% (3.1–25.8%) n=32,364 | 9.6% (3.5–22.3%) n=583 |
| Uninsured 18–64 | 7.0% | 9.0% (1.5–24.3%) n=32,286 | 8.2% (1.8–22.7%) n=582 |
| No HS diploma (25+) | 8.1% | 7.9% (1.8–20.7%) n=32,505 | 7.0% (1.5–16.5%) n=588 |
| Bachelor's or higher (25+) | 22.6% | 23.3% (9.2–53.6%) n=32,505 | 27.4% (12.3–59.7%) n=588 |
| Unemployment rate (16+) | 5.3% | 3.9% (0.0–9.8%) n=32,274 | 4.5% (0.0–9.7%) n=584 |
| Households without a vehicle | 5.7% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.2%) n=580 |
| Broadband subscription | 93.3% | 89.3% (75.1–97.1%) n=32,322 | 92.7% (81.1–97.4%) n=580 |
| Housing cost burden (≥30% income) | 41.4% | 23.7% (10.6–40.0%) n=32,322 | 28.9% (14.6–40.6%) n=580 |
| Homeownership rate | 55.6% | 78.7% (51.7–94.0%) n=32,322 | 75.2% (48.2–91.7%) n=580 |
| Crowded housing (>1 per room) | 2.6% | 1.3% (0.0–6.3%) n=32,322 | 2.6% (0.0–7.9%) n=580 |
| Foreign-born population | 12.4% | 2.6% (0.0–18.6%) n=32,553 | 6.7% (0.3–27.6%) n=588 |
| Single-parent households | 45.0% | 53.6% (37.3–74.1%) n=32,087 | 54.3% (40.5–76.0%) n=574 |
| Population 65+ | 13.4% | 19.4% (10.8–33.6%) n=32,553 | 18.9% (10.3–36.9%) n=588 |
| Median age | 37.7 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.0 yr (32.9–58.8) n=584 |
| Median household income | $96,866 | $72,070 ($46,039–$118,707) n=30,318 | $84,646 ($56,217–$132,145) n=547 |
| Median home value | $536,800 | $222,200 ($100,300–$579,820) n=30,049 | $452,750 ($241,540–$826,380) n=542 |
| Median gross rent | $2,221 | $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 | 79.6 yr ± 1.19 | 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 1.19 years of 79.6, 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