ZIP code
83321
in Castleford, IdahoPopulation 482
49.64/ 100
Ranked #16,727 of 32,066 US ZIPs (bottom 48%)
Ranked #156 of 268 Idaho ZIPs (bottom 42%)
Ranked #4 of 10 Twin Falls, ID ZIPs (top 40%)
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.
Arsenic in groundwater
41.2%
in the top 1.5% nationally
Lower is healthier
ST94thUS99thDefinition & 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 ›High cholesterol
28.9%
in the bottom 2.5% nationally
Lower is healthier
ST3rdUS2ndDefinition & source ›
The estimated share of adults with high cholesterol, among those who have ever been screened for it.
Full methodology ›Nitrate in drinking water
5.4%
in the top 4.1% nationally
Lower is healthier
ST94thUS96thDefinition & source ›
The modeled share of this area’s domestic-well groundwater at or above the federal nitrate limit of 10 milligrams 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 ›Distance to an emergency room
20 mi
in the top 5.5% nationally
Lower is healthier
ST88thUS95thDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest Medicare-certified hospital with an emergency room.
Full methodology ›Uninsured (under 65)
17.5%
in the top 7.0% nationally
Lower is healthier
ST95thUS93rdDefinition & source ›
The estimated share of adults aged 18–64 with no current health-insurance coverage.
Full methodology ›Industrial-pollution burden
in the bottom 7.1% nationally
Lower is healthier
ST32ndUS7thDefinition & source ›
The EPA’s modeled screening score for industrial chemical releases, weighting the amounts released by their toxicity and how many people live nearby — a relative comparison score, not a measured exposure.
Full methodology ›Air-toxics cancer risk
19.2 per million
in the bottom 7.2% nationally
Lower is healthier
ST26thUS7thDefinition & source ›
The EPA’s modeled estimate of added lifetime cancer risk from breathing outdoor air toxics, in cases per million people exposed over a lifetime.
Full methodology ›Transportation noise
0.07%
in the bottom 7.7% nationally
Lower is healthier
ST8thUS8thDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 55 decibels — a noticeable background presence.
Full methodology ›PFAS in drinking water
9.7%
in the bottom 8.3% nationally
Lower is healthier
ST24thUS8thDefinition & 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 ›Colon-cancer screening
57.6%
in the bottom 8.4% nationally
Higher is healthier
ST10thUS8thDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›The read
Castleford, Idaho (ZIP 83321), by its overall standing, sits in the bottom 48% nationally (16,727th) and the bottom 42% of Idaho (156th), based on limited data; treat as directional.
The profile opens on the burdens that define it most: modeled arsenic lies in the top 1.5% nationally, modeled nitrate sits in the top 4.1% nationally, and distance to an emergency room settles in the top 5.5% nationally. Modeled uninsured registers in the top 7.0% nationally. More positively, modeled high cholesterol stands in the bottom 2.5% nationally, and industrial-pollution burden lands in the bottom 7.1% nationally. Modeled air-toxics cancer risk is in the bottom 7.2% nationally, and transportation noise resides in the bottom 7.7% nationally. Households without a vehicle rests at the national minimum, shared with about 16% of ZIPs. Modeled pfas lies in the bottom 8.3% nationally.
Defined in plain terms, arsenic is a natural groundwater contaminant, here a modeled estimate of the chance private-well levels exceed a benchmark. Nitrate is a groundwater compound from fertilizer, manure, and sewage, here a modeled estimate of the chance private-well levels exceed a benchmark. Industrial-pollution burden is the EPA's modeled screening score weighting industrial chemical releases by their toxicity and how many people live nearby. The nearest ZIP ranking healthier overall is ZIP 83301, about 2.1 miles away.
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 81%
21%
Environmental Hazard
healthier than 60%
14%
Climate / Disaster RiskPartial
healthier than 64%
5%
About typical
Risk Behavior
healthier than 58%
11%
Mental Health
healthier than 58%
8%
Holding it back
Social Need / SDOH
healthier than 30%
16%
Preventive Care
healthier than 4%
13%
Disability
healthier than 33%
7%
Healthcare Access
healthier than 23%
5%
Lifting this score
Chronic Disease Burden
healthier than 84%
21%
Environmental Hazard
healthier than 93%
14%
About typical
Mental Health
healthier than 50%
8%
Disability
healthier than 48%
7%
Holding it back
Social Need / SDOH
healthier than 14%
16%
Preventive Care
healthier than 4%
13%
Risk Behavior
healthier than 9%
11%
Climate / Disaster RiskPartial
healthier than 26%
5%
Healthcare Access
healthier than 16%
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
83302
Idahoshares a border
Score 49.03
Closest healthier
83301
Idahoabout 2.1 mi away
Score 50.76
Similar health profile
91980
California97% similar profile
Score 52.06
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 | 24.1% | 21.6–26.7 |
| High blood pressure among adults | 29.3% | 26.2–32.4 |
| Cancer (non-skin) or melanoma among adults | 6.6% | 6.0–7.3 |
| Current asthma among adults | 10.5% | 9.3–11.8 |
| Coronary heart disease among adults | 6.2% | 5.5–7.0 |
| Chronic obstructive pulmonary disease among adults | 6.5% | 5.6–7.6 |
| Depression among adults | 22.1% | 19.2–25.2 |
| Diagnosed diabetes among adults | 11.2% | 9.7–12.7 |
| High cholesterol among adults who have ever been screened | 28.9% | 25.7–32.4 |
| Obesity among adults | 34.0% | 29.0–39.0 |
| Stroke among adults | 3.3% | 2.9–3.7 |
| All teeth lost among adults aged >=65 years | 14.7% | 12.1–17.7 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 17.5% | 14.7–20.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 68.3% | 64.6–71.6 |
| Visits to doctor for routine checkup within the past year among adults | 70.1% | 66.3–73.6 |
| Cholesterol screening among adults | 77.8% | 75.0–80.3 |
| Colorectal cancer screening among adults aged 45–75 years | 57.6% | 53.3–62.0 |
| Visited dentist or dental clinic in the past year among adults | 59.2% | 55.8–62.6 |
| Mammography use among women aged 50-74 years | 68.8% | 61.2–75.9 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 15.3% | 12.8–17.9 |
| Current cigarette smoking among adults | 13.1% | 11.1–15.5 |
| No leisure-time physical activity among adults | 29.4% | 25.7–33.6 |
| Short sleep duration among adults | 35.0% | 30.2–40.1 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 21.6% | 18.8–24.9 |
| Frequent mental distress among adults | 16.6% | 14.7–18.6 |
| Frequent physical distress among adults | 14.4% | 12.7–16.3 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 17.8% | 15.6–20.3 |
| Any disability among adults | 35.7% | 31.8–40.0 |
| Hearing disability among adults | 9.4% | 8.4–10.5 |
| Independent living disability among adults | 9.0% | 7.9–10.4 |
| Mobility disability among adults | 15.9% | 13.8–18.2 |
| Self-care disability among adults | 4.2% | 3.7–4.8 |
| Vision disability among adults | 6.1% | 5.4–6.9 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 22.8% | 19.4–26.0 |
| Food insecurity in the past 12 months among adults | 17.4% | 14.3–20.5 |
| Received food stamps in the past 12 months among adults | 11.4% | 9.1–13.7 |
| Housing insecurity in the past 12 months among adults | 14.4% | 12.1–16.7 |
| Lack of reliable transportation in the past 12 months among adults | 9.4% | 7.9–10.8 |
| Loneliness among adults | 31.3% | 27.0–35.2 |
| Utility services shut-off threat in the past 12 months among adults | 8.5% | 7.2–9.8 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | ID median (p10–p90) |
|---|---|---|---|
| Poverty rate | 14.8% | 10.6% (3.1–25.8%) n=32,364 | 9.9% (1.2–20.3%) n=275 |
| Uninsured 18–64 | 31.4% | 9.0% (1.5–24.3%) n=32,286 | 12.8% (0.0–25.9%) n=276 |
| No HS diploma (25+) | 22.0% | 7.9% (1.8–20.7%) n=32,505 | 6.9% (0.0–17.9%) n=275 |
| Bachelor's or higher (25+) | 24.3% | 23.3% (9.2–53.6%) n=32,505 | 22.1% (8.6–44.8%) n=275 |
| Unemployment rate (16+) | 5.7% | 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 | 86.7% | 89.3% (75.1–97.1%) n=32,322 | 90.8% (79.9–100.0%) n=275 |
| Housing cost burden (≥30% income) | 19.0% | 23.7% (10.6–40.0%) n=32,322 | 22.5% (1.7–33.4%) n=275 |
| Homeownership rate | 66.7% | 78.7% (51.7–94.0%) n=32,322 | 80.7% (61.8–97.5%) n=275 |
| Crowded housing (>1 per room) | 1.4% | 1.3% (0.0–6.3%) n=32,322 | 1.8% (0.0–7.2%) n=275 |
| Foreign-born population | 12.7% | 2.6% (0.0–18.6%) n=32,553 | 2.6% (0.0–13.3%) n=277 |
| Single-parent households | 61.2% | 53.6% (37.3–74.1%) n=32,087 | 58.4% (44.1–86.8%) n=271 |
| Population 65+ | 26.1% | 19.4% (10.8–33.6%) n=32,553 | 20.6% (11.3–42.1%) n=277 |
| Median age | 46.8 yr | 42.2 yr (33.0–56.3) n=32,292 | 42.5 yr (31.8–62.3) n=273 |
| Median household income | $60,000 | $72,070 ($46,039–$118,707) n=30,318 | $70,814 ($51,606–$96,415) n=252 |
| Median home value | — | $222,200 ($100,300–$579,820) n=30,049 | $344,400 ($224,720–$577,280) n=247 |
| Median gross rent | $925 | $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 | 80.5 yr ± 1.27 | 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 1.27 years of 80.5, 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