ZIP code
83421
in Chester, IdahoPopulation 220
53.28/ 100
Ranked #11,669 of 32,066 US ZIPs (top 36%)
Ranked #93 of 268 Idaho ZIPs (top 35%)
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.
Crowded housing
20%
in the top 1.2% nationally
Lower is healthier
ST99thUS99thDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Poverty rate
0.00%
at the national minimum
Lower is healthier
ST1stUS1stDefinition & source ›
The share of residents whose income is below the federal poverty line, from the Census Bureau’s American Community Survey.
Full methodology ›Homeownership rate
100%
at the national maximum
Higher is healthier
ST99thUS99thDefinition & source ›
The share of occupied homes that are owned, rather than rented, by the people living in them.
Full methodology ›Home broadband subscription
100%
at the national maximum
Higher is healthier
ST99thUS99thDefinition & source ›
The share of households with a broadband internet subscription.
Full methodology ›Slow internet speeds
3.4%
in the top 3.4% nationally
Lower is healthier
ST97thUS97thDefinition & source ›
The share of homes whose fastest available download speed is under 10 Mbps.
Full methodology ›Loneliness
27.7%
in the bottom 5.9% nationally
Lower is healthier
ST39thUS6thDefinition & source ›
The estimated share of adults who report feeling lonely.
Full methodology ›Distance to a Superfund site
72.6 mi
in the top 6.1% nationally
Higher is healthier
ST94thUS94thDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Superfund site — an abandoned or uncontrolled hazardous-waste site the EPA has listed for cleanup.
Full methodology ›Fine-particle (PM2.5) exceedance
1.4%
in the top 6.6% nationally
Lower is healthier
ST51stUS93rdDefinition & 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 ›Hearing disability
11.4%
in the top 7.0% nationally
Lower is healthier
ST56thUS93rdDefinition & source ›
The estimated share of adults who are deaf or have serious difficulty hearing.
Full methodology ›Humid extreme heat
12 days/year
in the bottom 8.9% nationally
Lower is healthier
ST37thUS9thDefinition & 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 ›The read
Chester, Idaho (ZIP 83421), in overall standing, comes out in the top 36% healthiest ZIPs nationally (11,669th) and the top 35% of Idaho (93rd), based on limited data; treat as directional.
A balanced showing across the data, with a few readings each side: poverty settles at the national minimum, homeownership lands at the national maximum, and home broadband subscription rests at the national maximum. Modeled loneliness settles in the bottom 5.9% nationally, and distance to a Superfund site lands in the top 6.1% nationally. Unemployment rests at the national minimum, shared with about 15% of ZIPs. On the other hand, crowded housing settles in the top 1.2% nationally, and slow internet speeds lands in the top 3.4% nationally. Modeled fine-particle rests in the top 6.6% nationally, and hearing disability settles in the top 7.0% nationally.
Set within its surrounding area, crowded housing runs far higher than the surrounding ZIPs on this measure. Defined simply, for reference, distance to a Superfund site is an abandoned or uncontrolled hazardous-waste site the EPA has identified for cleanup. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. The closest healthier ZIP overall is ZIP 83420, 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
Environmental Hazard
healthier than 72%
14%
Risk Behavior
healthier than 80%
11%
Mental Health
healthier than 71%
8%
Climate / Disaster RiskPartial
in the top 0.3%
5%
About typical
Chronic Disease Burden
healthier than 50%
21%
Social Need / SDOH
healthier than 45%
16%
Healthcare Access
healthier than 42%
5%
Holding it back
Preventive Care
healthier than 31%
13%
Disability
healthier than 34%
7%
Lifting this score
Environmental Hazard
healthier than 97%
14%
Preventive Care
healthier than 65%
13%
Mental Health
healthier than 72%
8%
Climate / Disaster RiskPartial
in the top 0.00%
5%
About typical
Chronic Disease Burden
healthier than 51%
21%
Risk Behavior
healthier than 50%
11%
Disability
healthier than 51%
7%
Holding it back
Social Need / SDOH
healthier than 24%
16%
Healthcare Access
healthier than 38%
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
83420
Idahoshares a border
Score 55.97
Closest healthier
83436
Idahoabout 3.0 mi away
Score 55.83
Similar health profile
83327
Idaho98% similar profile
Score 54.17
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 | 32.4% | 28.4–36.3 |
| High blood pressure among adults | 35.2% | 30.8–39.5 |
| Cancer (non-skin) or melanoma among adults | 10.3% | 9.2–11.4 |
| Current asthma among adults | 10.7% | 9.3–12.1 |
| Coronary heart disease among adults | 8.0% | 6.8–9.3 |
| Chronic obstructive pulmonary disease among adults | 8.5% | 6.8–10.4 |
| Depression among adults | 21.8% | 18.3–25.3 |
| Diagnosed diabetes among adults | 11.9% | 10.0–14.0 |
| High cholesterol among adults who have ever been screened | 36.5% | 32.0–41.2 |
| Obesity among adults | 33.1% | 25.8–40.8 |
| Stroke among adults | 4.1% | 3.5–4.7 |
| All teeth lost among adults aged >=65 years | 11.2% | 8.9–13.8 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 9.0% | 6.9–12.0 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 76.3% | 72.4–79.6 |
| Visits to doctor for routine checkup within the past year among adults | 75.9% | 71.9–79.5 |
| Cholesterol screening among adults | 84.2% | 81.7–86.5 |
| Colorectal cancer screening among adults aged 45–75 years | 69.9% | 64.6–74.8 |
| Visited dentist or dental clinic in the past year among adults | 62.2% | 58.5–65.9 |
| Mammography use among women aged 50-74 years | 68.5% | 59.1–76.6 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 14.0% | 11.4–16.8 |
| Current cigarette smoking among adults | 13.9% | 10.8–17.3 |
| No leisure-time physical activity among adults | 23.9% | 18.9–29.1 |
| Short sleep duration among adults | 32.5% | 26.3–39.3 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 19.1% | 15.6–23.1 |
| Frequent mental distress among adults | 15.3% | 13.2–17.5 |
| Frequent physical distress among adults | 15.3% | 12.9–17.8 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 15.1% | 12.8–17.8 |
| Any disability among adults | 37.3% | 31.8–42.9 |
| Hearing disability among adults | 11.4% | 9.9–13.0 |
| Independent living disability among adults | 8.5% | 7.1–10.1 |
| Mobility disability among adults | 17.5% | 14.4–20.9 |
| Self-care disability among adults | 4.1% | 3.4–5.1 |
| Vision disability among adults | 5.1% | 4.3–6.1 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 20.0% | 16.6–23.8 |
| Food insecurity in the past 12 months among adults | 11.8% | 9.1–15.1 |
| Received food stamps in the past 12 months among adults | 8.3% | 6.3–10.8 |
| Housing insecurity in the past 12 months among adults | 9.2% | 7.4–11.3 |
| Lack of reliable transportation in the past 12 months among adults | 6.7% | 5.5–8.0 |
| Loneliness among adults | 27.7% | 23.1–32.7 |
| Utility services shut-off threat in the past 12 months among adults | 6.2% | 5.1–7.4 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | ID median (p10–p90) |
|---|---|---|---|
| Poverty rate | 0.0% | 10.6% (3.1–25.8%) n=32,364 | 9.9% (1.2–20.3%) n=275 |
| Uninsured 18–64 | 0.0% | 9.0% (1.5–24.3%) n=32,286 | 12.8% (0.0–25.9%) n=276 |
| No HS diploma (25+) | 0.0% | 7.9% (1.8–20.7%) n=32,505 | 6.9% (0.0–17.9%) n=275 |
| Bachelor's or higher (25+) | 7.6% | 23.3% (9.2–53.6%) n=32,505 | 22.1% (8.6–44.8%) n=275 |
| Unemployment rate (16+) | 0.0% | 3.9% (0.0–9.8%) n=32,274 | 2.5% (0.0–6.8%) n=274 |
| Households without a vehicle | 0.0% | 3.9% (0.0–12.5%) n=32,322 | 1.8% (0.0–6.5%) n=275 |
| Broadband subscription | 100.0% | 89.3% (75.1–97.1%) n=32,322 | 90.8% (79.9–100.0%) n=275 |
| Housing cost burden (≥30% income) | 13.0% | 23.7% (10.6–40.0%) n=32,322 | 22.5% (1.7–33.4%) n=275 |
| Homeownership rate | 100.0% | 78.7% (51.7–94.0%) n=32,322 | 80.7% (61.8–97.5%) n=275 |
| Crowded housing (>1 per room) | 20.0% | 1.3% (0.0–6.3%) n=32,322 | 1.8% (0.0–7.2%) n=275 |
| Foreign-born population | 0.0% | 2.6% (0.0–18.6%) n=32,553 | 2.6% (0.0–13.3%) n=277 |
| Single-parent households | 66.7% | 53.6% (37.3–74.1%) n=32,087 | 58.4% (44.1–86.8%) n=271 |
| Population 65+ | 39.1% | 19.4% (10.8–33.6%) n=32,553 | 20.6% (11.3–42.1%) n=277 |
| Median age | 62.4 yr | 42.2 yr (33.0–56.3) n=32,292 | 42.5 yr (31.8–62.3) n=273 |
| Median household income | — | $72,070 ($46,039–$118,707) n=30,318 | $70,814 ($51,606–$96,415) n=252 |
| Median home value | $282,400 | $222,200 ($100,300–$579,820) n=30,049 | $344,400 ($224,720–$577,280) n=247 |
| Median gross rent | — | $1,021 ($677–$1,912) n=25,670 | $990 ($730–$1,495) n=192 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | ID median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 79.0 yr ± 0.81 | 78.9 yr (74.7–82.8) n=31,308 | 79.9 yr (76.8–83.5) n=278 |
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 0.81 years of 79.0, 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