ZIP code
98651
in Underwood, WashingtonPopulation 910
53.11/ 100
Ranked #11,918 of 32,066 US ZIPs (top 37%)
Ranked #307 of 581 Washington ZIPs (bottom 47%)
Ranked #81 of 120 Portland-Vancouver-Hillsboro, OR-WA ZIPs (bottom 33%)
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.
PFAS in drinking water
2.0%
in the bottom 0.05% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The modeled probability that PFAS “forever chemicals” would be detected in untreated groundwater in this area, the source private wells draw on.
A modeled likelihood for untreated groundwater, the source drawn on by private wells, which are federally unregulated. It is not a measurement of treated water delivered by a public system, and it is not a test of any individual well.
Full methodology ›The read
Underwood, Washington (ZIP 98651), on the composite measure, lands in the top 37% healthiest ZIPs nationally (11,918th) and the bottom 47% of Washington (307th).
The profile cuts both ways, and the readings bear that out: modeled pfas settles in the bottom 0.05% nationally, and poverty stands in the bottom 12.8% nationally. Crowded housing is at the national minimum, shared with about 29% of ZIPs. Modeled industrial-pollution burden rests in the bottom 14.5% nationally. Outer-floodplain exposure sits at the national minimum, shared with about 36% of ZIPs. Modeled humid heat registers in the bottom 18% nationally. Working the other way, fiber broadband lands at the national minimum, shared with about 19% of ZIPs. Modeled mammography resides in the bottom 14.9% nationally, and disaster risk lies in the top 17% nationally. Recreation settles at the national minimum, shared with about 35% of ZIPs.
In everyday language, pfas is the man-made "forever chemicals" that build up in the body and environment instead of breaking down; here a modeled estimate of the chance a private well contains them. Industrial-pollution burden is the EPA's modeled screening score weighting industrial chemical releases by their toxicity and how many people live nearby. Disaster risk is the area's national rank on its highest non-flood peril in FEMA's modeled Risk Index, like wildfire or quake. A healthier neighbor overall sits at ZIP 97031, 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 Portland-Vancouver-Hillsboro, OR-WA metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Environmental Hazard
healthier than 69%
14%
Risk Behavior
healthier than 85%
11%
Healthcare Access
healthier than 65%
5%
About typical
Chronic Disease Burden
healthier than 51%
21%
Social Need / SDOH
healthier than 57%
16%
Mental Health
healthier than 45%
8%
Disability
healthier than 55%
7%
Climate / Disaster Risk
healthier than 51%
5%
Holding it back
Preventive Care
healthier than 36%
13%
Lifting this score
Environmental Hazard
healthier than 64%
14%
Preventive Care
healthier than 61%
13%
Mental Health
healthier than 68%
8%
About typical
Risk Behavior
healthier than 53%
11%
Healthcare Access
healthier than 51%
5%
Holding it back
Chronic Disease Burden
healthier than 24%
21%
Social Need / SDOH
healthier than 17%
16%
Disability
healthier than 30%
7%
Climate / Disaster Risk
healthier than 13%
5%
Lifting this score
Environmental Hazard
healthier than 82%
14%
Preventive Care
healthier than 61%
13%
Mental Health
healthier than 94%
8%
Holding it back
Chronic Disease Burden
healthier than 13%
21%
Social Need / SDOH
healthier than 10%
16%
Risk Behavior
healthier than 39%
11%
Disability
healthier than 22%
7%
Climate / Disaster Risk
healthier than 13%
5%
Healthcare Access
healthier than 36%
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
97014
Oregonshares a border
Score 51.60
Closest healthier
97031
Oregonshares a border
Score 57.52
Similar health profile
84737
Utah94% similar profile
Score 56.50
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 | 31.7% | 28.2–35.0 |
| High blood pressure among adults | 36.9% | 32.9–41.0 |
| Cancer (non-skin) or melanoma among adults | 11.0% | 9.9–12.1 |
| Current asthma among adults | 11.4% | 10.1–12.8 |
| Coronary heart disease among adults | 7.5% | 6.6–8.6 |
| Chronic obstructive pulmonary disease among adults | 7.1% | 5.8–8.5 |
| Depression among adults | 25.1% | 21.6–28.6 |
| Diagnosed diabetes among adults | 11.7% | 9.9–13.6 |
| High cholesterol among adults who have ever been screened | 37.4% | 33.3–41.4 |
| Obesity among adults | 33.4% | 27.5–39.7 |
| Stroke among adults | 3.9% | 3.4–4.5 |
| All teeth lost among adults aged >=65 years | 9.2% | 7.4–11.3 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.7% | 6.0–9.6 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 76.2% | 72.9–79.2 |
| Visits to doctor for routine checkup within the past year among adults | 74.2% | 70.4–77.7 |
| Cholesterol screening among adults | 86.4% | 84.2–88.2 |
| Colorectal cancer screening among adults aged 45–75 years | 68.5% | 64.1–72.7 |
| Visited dentist or dental clinic in the past year among adults | 63.9% | 60.3–67.3 |
| Mammography use among women aged 50-74 years | 70.2% | 62.6–77.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 15.6% | 12.9–18.5 |
| Current cigarette smoking among adults | 11.9% | 9.2–14.7 |
| No leisure-time physical activity among adults | 19.5% | 15.7–23.6 |
| Short sleep duration among adults | 32.8% | 27.5–38.4 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 18.3% | 15.3–21.6 |
| Frequent mental distress among adults | 15.9% | 13.8–18.1 |
| Frequent physical distress among adults | 14.6% | 12.5–16.8 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 13.6% | 11.6–15.8 |
| Any disability among adults | 32.0% | 27.4–36.6 |
| Hearing disability among adults | 8.8% | 7.7–10.0 |
| Independent living disability among adults | 7.8% | 6.6–9.1 |
| Mobility disability among adults | 14.7% | 12.2–17.4 |
| Self-care disability among adults | 3.9% | 3.3–4.6 |
| Vision disability among adults | 4.7% | 4.1–5.5 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 3.7% | 10.6% (3.1–25.8%) n=32,364 | 9.6% (3.5–22.3%) n=583 |
| Uninsured 18–64 | 5.2% | 9.0% (1.5–24.3%) n=32,286 | 8.2% (1.8–22.7%) n=582 |
| No HS diploma (25+) | 7.9% | 7.9% (1.8–20.7%) n=32,505 | 7.0% (1.5–16.5%) n=588 |
| Bachelor's or higher (25+) | 36.9% | 23.3% (9.2–53.6%) n=32,505 | 27.4% (12.3–59.7%) n=588 |
| Unemployment rate (16+) | 3.0% | 3.9% (0.0–9.8%) n=32,274 | 4.5% (0.0–9.7%) n=584 |
| Households without a vehicle | 1.9% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.2%) n=580 |
| Broadband subscription | 94.3% | 89.3% (75.1–97.1%) n=32,322 | 92.7% (81.1–97.4%) n=580 |
| Housing cost burden (≥30% income) | 33.6% | 23.7% (10.6–40.0%) n=32,322 | 28.9% (14.6–40.6%) n=580 |
| Homeownership rate | 87.4% | 78.7% (51.7–94.0%) n=32,322 | 75.2% (48.2–91.7%) n=580 |
| Crowded housing (>1 per room) | 0.0% | 1.3% (0.0–6.3%) n=32,322 | 2.6% (0.0–7.9%) n=580 |
| Foreign-born population | 7.6% | 2.6% (0.0–18.6%) n=32,553 | 6.7% (0.3–27.6%) n=588 |
| Single-parent households | 74.3% | 53.6% (37.3–74.1%) n=32,087 | 54.3% (40.5–76.0%) n=574 |
| Population 65+ | 37.7% | 19.4% (10.8–33.6%) n=32,553 | 18.9% (10.3–36.9%) n=588 |
| Median age | 58.3 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.0 yr (32.9–58.8) n=584 |
| Median household income | $90,000 | $72,070 ($46,039–$118,707) n=30,318 | $84,646 ($56,217–$132,145) n=547 |
| Median home value | $730,700 | $222,200 ($100,300–$579,820) n=30,049 | $452,750 ($241,540–$826,380) n=542 |
| Median gross rent | $1,035 | $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 | 82.0 yr ± 2.49 | 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 2.49 years of 82.0, 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