ZIP code
99116
in Coulee Dam, WashingtonPopulation 1,786
41.64/ 100
Ranked #25,534 of 32,066 US ZIPs (bottom 20%)
Ranked #558 of 581 Washington ZIPs (bottom 4.0%)
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
3.8%
in the top 1.7% nationally
Lower is healthier
ST97thUS98thDefinition & 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 ›Arsenic in groundwater
30.1%
in the top 3.2% nationally
Lower is healthier
ST98thUS97thDefinition & source ›
The modeled probability that untreated groundwater in this area — the source private wells draw on — exceeds the federal arsenic limit of 10 micrograms per liter.
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 ›Recreation access
1.4 per 1,000 residents
in the top 4.5% nationally
Higher is healthier
ST96thUS96thDefinition & source ›
The number of places for physical recreation — gyms, sports, and fitness venues — 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 ›Unemployment rate
11.7%
in the top 6.8% nationally
Lower is healthier
ST94thUS93rdDefinition & source ›
The share of the civilian labor force that is unemployed.
Full methodology ›Mammography
68.3%
in the bottom 8.3% nationally
Higher is healthier
ST17thUS8thDefinition & source ›
The estimated share of women aged 50–74 who had a mammogram within the past two years.
Full methodology ›Stroke
4.9%
in the top 16% nationally
Lower is healthier
ST91stUS84thDefinition & source ›
The estimated share of adults who have been told by a health professional that they have had a stroke.
Full methodology ›Vision disability
7.2%
in the top 18% nationally
Lower is healthier
ST92ndUS82ndDefinition & source ›
The estimated share of adults who are blind or have serious difficulty seeing even with glasses.
Full methodology ›Independent-living disability
10.7%
in the top 21% nationally
Lower is healthier
ST94thUS79thDefinition & source ›
The estimated share of adults who have difficulty doing errands alone, such as visiting a doctor’s office, because of a physical, mental, or emotional condition.
Full methodology ›Fair or poor health
24.2%
in the top 26% nationally
Lower is healthier
ST91stUS74thDefinition & source ›
The estimated share of adults who rate their own general health as fair or poor.
Full methodology ›The read
By its overall health score, Coulee Dam, Washington (ZIP 99116) lands in the bottom 20% nationally (25,534th) and the bottom 4.0% of Washington (558th), based on limited data; treat as directional.
The measures split the difference for this area: recreation settles in the top 4.5% nationally, and modeled humid heat lies in the bottom 11.5% nationally. Distance to a hazardous-chemical facility resides in the top 13.6% nationally, and distance to an emergency room lands in the bottom 13.9% nationally. Against that, modeled fine-particle registers in the top 1.7% nationally, modeled arsenic sits in the top 3.2% nationally, and unemployment rests in the top 6.8% nationally. Modeled mammography is in the bottom 8.3% nationally. Fiber broadband stands at the national minimum, shared with about 19% of ZIPs. Modeled hearing disability settles in the top 12.7% nationally.
To translate a couple of terms, fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. Arsenic is a natural groundwater contaminant, here a modeled estimate of the chance private-well levels exceed a benchmark. 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. Overall, the nearest healthier neighbor is ZIP 99133, 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.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Climate / Disaster RiskPartial
healthier than 96%
5%
About typical
Risk Behavior
healthier than 53%
11%
Holding it back
Chronic Disease Burden
healthier than 26%
21%
Social Need / SDOH
healthier than 17%
16%
Environmental Hazard
healthier than 11%
14%
Preventive Care
healthier than 17%
13%
Mental Health
healthier than 19%
8%
Disability
healthier than 19%
7%
Healthcare Access
healthier than 38%
5%
Lifting this score
Climate / Disaster RiskPartial
healthier than 82%
5%
Holding it back
Chronic Disease Burden
healthier than 9%
21%
Social Need / SDOH
in the bottom 0.9%
16%
Environmental Hazard
healthier than 13%
14%
Preventive Care
healthier than 28%
13%
Risk Behavior
healthier than 9%
11%
Mental Health
healthier than 27%
8%
Disability
healthier than 4%
7%
Healthcare Access
healthier than 31%
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
99124
Washingtonshares a border
Score 41.56
Closest healthier
99133
Washingtonshares a border
Score 46.65
Similar health profile
97632
Oregon96% similar profile
Score 39.99
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 | 32.1% | 29.5–34.8 |
| High blood pressure among adults | 38.4% | 35.4–41.7 |
| Cancer (non-skin) or melanoma among adults | 9.3% | 8.6–10.1 |
| Current asthma among adults | 13.4% | 12.2–14.8 |
| Coronary heart disease among adults | 8.8% | 8.0–9.7 |
| Chronic obstructive pulmonary disease among adults | 8.8% | 7.8–9.8 |
| Depression among adults | 25.3% | 22.5–28.4 |
| Diagnosed diabetes among adults | 14.5% | 12.9–16.2 |
| High cholesterol among adults who have ever been screened | 35.9% | 32.9–39.2 |
| Obesity among adults | 34.5% | 29.8–39.6 |
| Stroke among adults | 4.9% | 4.5–5.3 |
| All teeth lost among adults aged >=65 years | 16.5% | 14.2–18.9 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 9.4% | 8.0–11.1 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 74.2% | 71.5–76.7 |
| Visits to doctor for routine checkup within the past year among adults | 73.3% | 70.1–76.3 |
| Cholesterol screening among adults | 82.3% | 80.6–84.2 |
| Colorectal cancer screening among adults aged 45–75 years | 67.8% | 64.0–71.4 |
| Visited dentist or dental clinic in the past year among adults | 57.2% | 54.2–60.2 |
| Mammography use among women aged 50-74 years | 68.3% | 61.7–74.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 14.7% | 12.6–17.1 |
| Current cigarette smoking among adults | 17.9% | 15.7–20.4 |
| No leisure-time physical activity among adults | 24.4% | 21.3–27.9 |
| Short sleep duration among adults | 35.9% | 31.2–40.5 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 24.2% | 21.5–27.0 |
| Frequent mental distress among adults | 19.2% | 17.4–21.1 |
| Frequent physical distress among adults | 17.5% | 15.8–19.5 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 17.9% | 16.2–19.8 |
| Any disability among adults | 39.0% | 35.4–42.9 |
| Hearing disability among adults | 10.6% | 9.6–11.6 |
| Independent living disability among adults | 10.7% | 9.6–11.8 |
| Mobility disability among adults | 18.2% | 16.2–20.2 |
| Self-care disability among adults | 5.1% | 4.6–5.6 |
| Vision disability among adults | 7.2% | 6.5–7.9 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 15.8% | 10.6% (3.1–25.8%) n=32,364 | 9.6% (3.5–22.3%) n=583 |
| Uninsured 18–64 | 16.5% | 9.0% (1.5–24.3%) n=32,286 | 8.2% (1.8–22.7%) n=582 |
| No HS diploma (25+) | 7.0% | 7.9% (1.8–20.7%) n=32,505 | 7.0% (1.5–16.5%) n=588 |
| Bachelor's or higher (25+) | 26.9% | 23.3% (9.2–53.6%) n=32,505 | 27.4% (12.3–59.7%) n=588 |
| Unemployment rate (16+) | 11.7% | 3.9% (0.0–9.8%) n=32,274 | 4.5% (0.0–9.7%) n=584 |
| Households without a vehicle | 3.4% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.2%) n=580 |
| Broadband subscription | 91.7% | 89.3% (75.1–97.1%) n=32,322 | 92.7% (81.1–97.4%) n=580 |
| Housing cost burden (≥30% income) | 22.1% | 23.7% (10.6–40.0%) n=32,322 | 28.9% (14.6–40.6%) n=580 |
| Homeownership rate | 67.2% | 78.7% (51.7–94.0%) n=32,322 | 75.2% (48.2–91.7%) n=580 |
| Crowded housing (>1 per room) | 2.1% | 1.3% (0.0–6.3%) n=32,322 | 2.6% (0.0–7.9%) n=580 |
| Foreign-born population | 2.9% | 2.6% (0.0–18.6%) n=32,553 | 6.7% (0.3–27.6%) n=588 |
| Single-parent households | 57.4% | 53.6% (37.3–74.1%) n=32,087 | 54.3% (40.5–76.0%) n=574 |
| Population 65+ | 21.1% | 19.4% (10.8–33.6%) n=32,553 | 18.9% (10.3–36.9%) n=588 |
| Median age | 39.3 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.0 yr (32.9–58.8) n=584 |
| Median household income | $65,946 | $72,070 ($46,039–$118,707) n=30,318 | $84,646 ($56,217–$132,145) n=547 |
| Median home value | $238,900 | $222,200 ($100,300–$579,820) n=30,049 | $452,750 ($241,540–$826,380) n=542 |
| Median gross rent | $1,055 | $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 | 88.1 yr ± 3.58 | 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 3.58 years of 88.1, 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