ZIP code
99336
in Kennewick, WashingtonPopulation 50,735
49.85/ 100
Ranked #16,447 of 32,066 US ZIPs (bottom 49%)
Ranked #409 of 581 Washington ZIPs (bottom 30%)
Ranked #7 of 15 Kennewick-Richland, WA ZIPs (top 47%)
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.
Subsidized affordable housing
1,704 units
in the top 0.5% nationally
Higher is healthier
ST98thUS99thDefinition & source ›
The number of affordable rental units in this ZIP supported by the federal Low-Income Housing Tax Credit program.
Full methodology ›Lithium in drinking water
9.4 µg/L
in the bottom 2.7% nationally
Lower is healthier
ST1stUS3rdDefinition & source ›
The average detected level of lithium — a natural trace metal with no federal drinking-water limit yet — across the public water systems serving this ZIP, in micrograms per liter.
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 ›Dental provider access
1.3 per 1,000 residents
in the top 4.0% nationally
Higher is healthier
ST96thUS96thDefinition & source ›
The number of dental offices 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 ›Transit access
5.5 per 1,000 residents
in the top 4.3% nationally
Higher is healthier
ST94thUS96thDefinition & source ›
The number of public-transit stops 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
0 ppb
at the national minimum
Lower is healthier
US1stDefinition & 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 ›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 ›Outpatient-care access
0.57 per 1,000 residents
in the top 6.1% nationally
Higher is healthier
ST94thUS94thDefinition & source ›
The number of outpatient 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 ›Fine-particle (PM2.5) exceedance
1.4%
in the top 6.5% nationally
Lower is healthier
ST68thUS94thDefinition & 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 ›PFOA in drinking water
92.9%
in the top 7.5% nationally
Lower is healthier
ST97thUS93rdDefinition & source ›
The share of residents served by public water systems where PFOA, one of the man-made “forever chemicals,” was detected in EPA testing.
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 ›PFOS in drinking water
92.9%
in the top 7.6% nationally
Lower is healthier
ST94thUS92ndDefinition & source ›
The share of residents served by public water systems where PFOS, one of the most common “forever chemicals,” was detected in EPA testing.
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 ›The read
By its overall health score, ZIP 99336, one of several in Kennewick, Washington lands in the bottom 49% nationally (16,447th) and the bottom 30% of Washington (409th), based on limited data; treat as directional.
The burdens that read clearest in the data come first: modeled tree cover rests at the national minimum, and fine-particle is in the top 6.5% nationally. PFOA in drinking water stands in the top 7.5% nationally, and PFOS in drinking water settles in the top 7.6% nationally. Better still, subsidized affordable housing lies in the top 0.5% nationally, lithium in drinking water resides in the bottom 2.7% nationally, and dental providers lands in the top 4.0% nationally. Transit registers in the top 4.3% nationally, lead in tap water sits at the national minimum, and outpatient rests in the top 6.1% nationally.
Weighed against the ZIPs nearby, subsidized affordable housing runs far higher than the surrounding ZIPs on this measure. To translate a couple of terms, lithium in drinking water is a natural metal that dissolves into some groundwater and has no federal drinking-water limit yet. Lead in tap water is the EPA trigger, 15 parts per billion in tap samples, above which a water system must act on lead. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. Overall, the nearest healthier neighbor is ZIP 99337, 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
Chronic Disease Burden
healthier than 71%
21%
Social Need / SDOH
healthier than 90%
16%
Risk Behavior
healthier than 68%
11%
Healthcare Access
healthier than 90%
5%
About typical
Disability
healthier than 40%
7%
Holding it back
Environmental Hazard
healthier than 37%
14%
Preventive Care
healthier than 6%
13%
Mental Health
healthier than 27%
8%
Climate / Disaster RiskPartial
healthier than 36%
5%
Lifting this score
Social Need / SDOH
healthier than 76%
16%
Healthcare Access
healthier than 85%
5%
About typical
Chronic Disease Burden
healthier than 49%
21%
Holding it back
Environmental Hazard
healthier than 38%
14%
Preventive Care
healthier than 9%
13%
Risk Behavior
healthier than 19%
11%
Mental Health
healthier than 38%
8%
Disability
healthier than 19%
7%
Climate / Disaster RiskPartial
healthier than 6%
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
99301
Washingtonshares a border
Score 49.51
Closest healthier
99337
Washingtonshares a border
Score 52.31
Similar health profile
98837
Washington96% similar profile
Score 50.01
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 | 23.7% | 21.6–25.7 |
| High blood pressure among adults | 29.1% | 26.6–31.6 |
| Cancer (non-skin) or melanoma among adults | 7.3% | 6.6–7.9 |
| Current asthma among adults | 11.4% | 10.2–12.6 |
| Coronary heart disease among adults | 6.0% | 5.4–6.6 |
| Chronic obstructive pulmonary disease among adults | 6.4% | 5.8–7.1 |
| Depression among adults | 25.0% | 22.3–27.8 |
| Diagnosed diabetes among adults | 11.2% | 10.0–12.5 |
| High cholesterol among adults who have ever been screened | 35.3% | 32.5–38.2 |
| Obesity among adults | 38.5% | 34.4–42.8 |
| Stroke among adults | 3.3% | 3.1–3.6 |
| All teeth lost among adults aged >=65 years | 14.6% | 12.1–17.3 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 15.1% | 13.5–17.0 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 68.4% | 65.5–71.1 |
| Visits to doctor for routine checkup within the past year among adults | 69.2% | 66.1–72.3 |
| Cholesterol screening among adults | 79.5% | 77.6–81.4 |
| Colorectal cancer screening among adults aged 45–75 years | 61.5% | 57.5–65.3 |
| Visited dentist or dental clinic in the past year among adults | 55.9% | 52.9–59.0 |
| Mammography use among women aged 50-74 years | 69.4% | 63.0–75.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 16.6% | 14.4–19.0 |
| Current cigarette smoking among adults | 12.4% | 11.0–14.0 |
| No leisure-time physical activity among adults | 24.8% | 22.0–27.9 |
| Short sleep duration among adults | 33.6% | 29.9–37.6 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 22.8% | 20.6–25.2 |
| Frequent mental distress among adults | 18.2% | 16.5–20.1 |
| Frequent physical distress among adults | 15.2% | 13.7–16.8 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 17.3% | 15.8–19.1 |
| Any disability among adults | 33.2% | 30.1–36.3 |
| Hearing disability among adults | 7.3% | 6.6–8.1 |
| Independent living disability among adults | 9.4% | 8.5–10.4 |
| Mobility disability among adults | 14.2% | 12.7–15.7 |
| Self-care disability among adults | 4.4% | 4.0–4.7 |
| Vision disability among adults | 6.2% | 5.7–6.8 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | WA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 17.4% | 10.6% (3.1–25.8%) n=32,364 | 9.6% (3.5–22.3%) n=583 |
| Uninsured 18–64 | 16.0% | 9.0% (1.5–24.3%) n=32,286 | 8.2% (1.8–22.7%) n=582 |
| No HS diploma (25+) | 15.8% | 7.9% (1.8–20.7%) n=32,505 | 7.0% (1.5–16.5%) n=588 |
| Bachelor's or higher (25+) | 21.4% | 23.3% (9.2–53.6%) n=32,505 | 27.4% (12.3–59.7%) n=588 |
| Unemployment rate (16+) | 5.8% | 3.9% (0.0–9.8%) n=32,274 | 4.5% (0.0–9.7%) n=584 |
| Households without a vehicle | 13.0% | 3.9% (0.0–12.5%) n=32,322 | 3.7% (0.0–10.2%) n=580 |
| Broadband subscription | 89.0% | 89.3% (75.1–97.1%) n=32,322 | 92.7% (81.1–97.4%) n=580 |
| Housing cost burden (≥30% income) | 35.5% | 23.7% (10.6–40.0%) n=32,322 | 28.9% (14.6–40.6%) n=580 |
| Homeownership rate | 48.3% | 78.7% (51.7–94.0%) n=32,322 | 75.2% (48.2–91.7%) n=580 |
| Crowded housing (>1 per room) | 6.2% | 1.3% (0.0–6.3%) n=32,322 | 2.6% (0.0–7.9%) n=580 |
| Foreign-born population | 16.3% | 2.6% (0.0–18.6%) n=32,553 | 6.7% (0.3–27.6%) n=588 |
| Single-parent households | 42.6% | 53.6% (37.3–74.1%) n=32,087 | 54.3% (40.5–76.0%) n=574 |
| Population 65+ | 15.2% | 19.4% (10.8–33.6%) n=32,553 | 18.9% (10.3–36.9%) n=588 |
| Median age | 34.4 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.0 yr (32.9–58.8) n=584 |
| Median household income | $62,527 | $72,070 ($46,039–$118,707) n=30,318 | $84,646 ($56,217–$132,145) n=547 |
| Median home value | $324,400 | $222,200 ($100,300–$579,820) n=30,049 | $452,750 ($241,540–$826,380) n=542 |
| Median gross rent | $1,193 | $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 | 78.8 yr ± 0.58 | 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 0.58 years of 78.8, 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