ZIP code
57481
in Westport, South DakotaPopulation 271
56.47/ 100
Ranked #7,795 of 32,066 US ZIPs (top 24%)
Ranked #90 of 360 South Dakota ZIPs (top 25%)
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.
Distance to a Superfund site
150.8 mi
in the top 1.8% nationally
Higher is healthier
ST86thUS98thDefinition & 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 ›Radon
3.4 pCi/L
in the top 5.9% nationally
Lower is healthier
ST44thUS94thDefinition & source ›
The modeled typical indoor radon level for this area, in picocuries per liter — the EPA recommends fixing a home at 4 pCi/L or above.
Modeled from indoor-radon measurements. In Alaska and Hawaii, where those measurements are not published, a US Geological Survey geologic radon-potential category stands in — a coarser input, disclosed rather than hidden.
Full methodology ›Walkability
1.5 intersections/sq mi
in the bottom 4.5% nationally
Higher is healthier
ST41stUS4thDefinition & source ›
The number of street intersections per square mile — a standard street-connectivity measure; denser networks correlate with more walkable neighborhoods.
Full methodology ›Housing-cost burden
6.6%
in the bottom 6.2% nationally
Lower is healthier
ST13thUS6thDefinition & source ›
The share of households spending 30% or more of their income on housing.
Full methodology ›Fine-particle (PM2.5) exceedance
1.2%
in the top 7.7% nationally
Lower is healthier
ST79thUS92ndDefinition & 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 ›Fiber broadband
97.1%
in the top 8.1% nationally
Higher is healthier
ST48thUS92ndDefinition & source ›
The share of homes where fiber-optic internet service is available.
Full methodology ›Short sleep
29.6%
in the bottom 7.9% nationally
Lower is healthier
ST53rdUS8thDefinition & source ›
The estimated share of adults who usually sleep less than seven hours in a 24-hour period.
Full methodology ›Homeownership rate
95%
in the top 8.6% nationally
Higher is healthier
ST91stUS91stDefinition & source ›
The share of occupied homes that are owned, rather than rented, by the people living in them.
Full methodology ›Lithium in drinking water
60 µg/L
in the top 8.8% nationally
Lower is healthier
ST76thUS91stDefinition & 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 ›Tooth loss
7.4%
in the bottom 10.1% nationally
Lower is healthier
ST4thUS10thDefinition & source ›
The estimated share of adults aged 65 and older who have lost all of their natural teeth.
Full methodology ›The read
On balance, and by the composite measure, Westport, South Dakota (ZIP 57481) ranks in the top 24% healthiest ZIPs nationally (7,795th) and the top 25% of South Dakota (90th), based on limited data; treat as directional.
Strengths and concerns sit side by side across the measures here: distance to a Superfund site lands in the top 1.8% nationally, and housing-cost burden registers in the bottom 6.2% nationally. Unemployment sits at the national minimum, shared with about 15% of ZIPs. Fiber broadband rests in the top 8.1% nationally, modeled short sleep is in the bottom 7.9% nationally, and homeownership stands in the top 8.6% nationally. On the other hand, modeled radon settles in the top 5.9% nationally, walkability lies in the bottom 4.5% nationally, and modeled fine-particle resides in the top 7.7% nationally. Lithium in drinking water lands in the top 8.8% nationally.
In plainer terms, distance to a Superfund site is an abandoned or uncontrolled hazardous-waste site the EPA has identified for cleanup. Radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. Fine-particle is fine airborne particles about one-thirtieth the width of a hair, counted on modeled days above the EPA standard. For a healthier nearby ZIP overall, look to ZIP 57401, 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 62%
21%
Preventive Care
healthier than 72%
13%
Risk Behavior
healthier than 70%
11%
Mental Health
healthier than 79%
8%
Disability
healthier than 64%
7%
Climate / Disaster RiskPartial
healthier than 62%
5%
About typical
Social Need / SDOH
healthier than 58%
16%
Environmental Hazard
healthier than 51%
14%
Holding it back
Healthcare Access
healthier than 19%
5%
Lifting this score
Social Need / SDOH
healthier than 71%
16%
Environmental Hazard
healthier than 77%
14%
Preventive Care
healthier than 60%
13%
Disability
healthier than 60%
7%
Healthcare Access
healthier than 62%
5%
About typical
Chronic Disease Burden
healthier than 59%
21%
Risk Behavior
healthier than 60%
11%
Mental Health
healthier than 44%
8%
Climate / Disaster RiskPartial
healthier than 51%
5%
Nothing measured is holding this score back.
“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
57401
South Dakotashares a border
Score 57.76
Closest healthier
57433
South Dakotashares a border
Score 58.66
Similar health profile
11975
New York99% similar profile
Score 67.04
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 | 30.2% | 27.7–32.7 |
| High blood pressure among adults | 34.4% | 31.6–37.2 |
| Cancer (non-skin) or melanoma among adults | 10.2% | 9.4–11.1 |
| Current asthma among adults | 10.2% | 9.2–11.2 |
| Coronary heart disease among adults | 7.2% | 6.5–7.9 |
| Chronic obstructive pulmonary disease among adults | 7.2% | 6.2–8.1 |
| Depression among adults | 20.9% | 18.6–23.4 |
| Diagnosed diabetes among adults | 12.0% | 10.7–13.4 |
| High cholesterol among adults who have ever been screened | 35.9% | 32.9–38.9 |
| Obesity among adults | 36.0% | 31.6–40.7 |
| Stroke among adults | 3.6% | 3.3–3.9 |
| All teeth lost among adults aged >=65 years | 7.4% | 6.3–8.6 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.5% | 6.2–9.0 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 79.1% | 76.8–81.4 |
| Visits to doctor for routine checkup within the past year among adults | 78.6% | 75.9–81.1 |
| Cholesterol screening among adults | 87.1% | 85.4–88.6 |
| Colorectal cancer screening among adults aged 45–75 years | 67.3% | 64.0–70.4 |
| Visited dentist or dental clinic in the past year among adults | 69.8% | 67.4–72.0 |
| Mammography use among women aged 50-74 years | 77.3% | 72.7–81.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 17.0% | 14.9–19.3 |
| Current cigarette smoking among adults | 15.5% | 13.3–17.9 |
| No leisure-time physical activity among adults | 24.6% | 21.2–28.2 |
| Short sleep duration among adults | 29.6% | 26.2–32.9 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 17.1% | 14.9–19.4 |
| Frequent mental distress among adults | 14.8% | 13.2–16.4 |
| Frequent physical distress among adults | 13.1% | 11.6–14.6 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 13.0% | 11.5–14.7 |
| Any disability among adults | 30.6% | 27.3–34.1 |
| Hearing disability among adults | 8.6% | 7.8–9.5 |
| Independent living disability among adults | 7.4% | 6.5–8.4 |
| Mobility disability among adults | 13.7% | 12.0–15.6 |
| Self-care disability among adults | 3.6% | 3.2–4.1 |
| Vision disability among adults | 4.3% | 3.8–4.8 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | SD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 4.8% | 10.6% (3.1–25.8%) n=32,364 | 8.8% (1.1–33.5%) n=364 |
| Uninsured 18–64 | 4.7% | 9.0% (1.5–24.3%) n=32,286 | 9.6% (0.0–33.2%) n=365 |
| No HS diploma (25+) | 8.6% | 7.9% (1.8–20.7%) n=32,505 | 6.0% (0.8–15.3%) n=366 |
| Bachelor's or higher (25+) | 12.4% | 23.3% (9.2–53.6%) n=32,505 | 24.6% (10.3–40.7%) n=366 |
| Unemployment rate (16+) | 0.0% | 3.9% (0.0–9.8%) n=32,274 | 1.1% (0.0–8.0%) n=365 |
| Households without a vehicle | 3.3% | 3.9% (0.0–12.5%) n=32,322 | 1.9% (0.0–9.6%) n=364 |
| Broadband subscription | 86.8% | 89.3% (75.1–97.1%) n=32,322 | 87.9% (73.7–96.3%) n=364 |
| Housing cost burden (≥30% income) | 6.6% | 23.7% (10.6–40.0%) n=32,322 | 17.5% (5.2–30.6%) n=364 |
| Homeownership rate | 95.0% | 78.7% (51.7–94.0%) n=32,322 | 79.9% (57.2–94.8%) n=364 |
| Crowded housing (>1 per room) | 0.0% | 1.3% (0.0–6.3%) n=32,322 | 0.6% (0.0–10.2%) n=364 |
| Foreign-born population | 0.4% | 2.6% (0.0–18.6%) n=32,553 | 0.6% (0.0–5.3%) n=367 |
| Single-parent households | 70.3% | 53.6% (37.3–74.1%) n=32,087 | 56.7% (32.7–81.4%) n=362 |
| Population 65+ | 24.0% | 19.4% (10.8–33.6%) n=32,553 | 20.3% (8.4–33.0%) n=367 |
| Median age | 54.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.5 yr (27.6–56.7) n=365 |
| Median household income | $68,125 | $72,070 ($46,039–$118,707) n=30,318 | $74,865 ($51,211–$102,582) n=336 |
| Median home value | $215,600 | $222,200 ($100,300–$579,820) n=30,049 | $177,400 ($79,000–$321,400) n=311 |
| Median gross rent | — | $1,021 ($677–$1,912) n=25,670 | $763 ($544–$1,089) n=243 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | SD median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 83.2 yr ± 1.38 | 78.9 yr (74.7–82.8) n=31,308 | 80.7 yr (77.4–84.2) n=357 |
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 1.38 years of 83.2, 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