ZIP code
57730
in Custer, South DakotaPopulation 5,596
58.32/ 100
Ranked #6,137 of 32,066 US ZIPs (top 19%)
Ranked #46 of 360 South Dakota ZIPs (top 12.8%)
Ranked #7 of 27 Rapid City, SD ZIPs (top 26%)
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.
Radon
3.7 pCi/L
in the top 3.6% nationally
Lower is healthier
ST63rdUS96thDefinition & 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 ›Park land
61.6%
in the top 1.6% nationally
Higher is healthier
ST98thUS98thDefinition & source ›
The share of this ZIP’s land area that is public parkland.
Full methodology ›Short sleep
27%
in the bottom 1.5% nationally
Lower is healthier
ST4thUS1stDefinition & source ›
The estimated share of adults who usually sleep less than seven hours in a 24-hour period.
Full methodology ›Humid extreme heat
5.9 days/year
in the bottom 3.8% nationally
Lower is healthier
ST1stUS4thDefinition & 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 ›Air-toxics cancer risk
10.7 per million
in the bottom 5.5% nationally
Lower is healthier
ST15thUS5thDefinition & 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 ›Elder-services access
0.19 per 1,000 residents
in the top 7.5% nationally
Higher is healthier
ST81stUS93rdDefinition & source ›
The number of services for older adults and people with disabilities 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 ›Walkability
2.1 intersections/sq mi
in the bottom 8.1% nationally
Higher is healthier
ST60thUS8thDefinition & source ›
The number of street intersections per square mile — a standard street-connectivity measure; denser networks correlate with more walkable neighborhoods.
Full methodology ›Distance to a hazardous-chemical facility
14.7 mi
in the top 8.2% nationally
Higher is healthier
ST85thUS92ndDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest facility that handles enough hazardous chemicals to require an EPA risk-management plan for accidental releases.
Full methodology ›Distance to a community health center
18.6 mi
in the top 9.1% nationally
Lower is healthier
ST60thUS91stDefinition & source ›
The distance in miles from this ZIP’s edge to the nearest federally funded community health center, which serves patients regardless of ability to pay.
Full methodology ›Cognitive disability
10.9%
in the bottom 9.5% nationally
Lower is healthier
ST2ndUS9thDefinition & source ›
The estimated share of adults with serious difficulty concentrating, remembering, or making decisions.
Full methodology ›The read
In its overall standing, Custer, South Dakota (ZIP 57730) lands in the top 19% healthiest ZIPs nationally (6,137th) and the top 12.8% of South Dakota (46th).
This area's measures are easy to read as a mixed set: park land lands in the top 1.6% nationally, modeled short sleep lies in the bottom 1.5% nationally, and modeled humid heat stands in the bottom 3.8% nationally. Modeled air-toxics cancer risk rests in the bottom 5.5% nationally, elder services registers in the top 7.5% nationally, and distance to a hazardous-chemical facility resides in the top 8.2% nationally. Set against that, modeled radon settles in the top 3.6% nationally, and walkability is in the bottom 8.1% nationally. Distance to a community health center sits in the top 9.1% nationally, and modeled fine-particle lands in the top 10.5% nationally.
Against the wider neighborhood, park land runs far higher than the surrounding ZIPs on this measure. Put simply, radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. Air-toxics cancer risk is a modeled EPA estimate of added lifetime cancer risk from breathing outdoor air, per million people. 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. On the overall standing, ZIP 57745, just across the boundary, ranks healthier.
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. Compare it against the US, this state and the Rapid City, SD metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Social Need / SDOH
healthier than 75%
16%
Preventive Care
healthier than 93%
13%
Risk Behavior
healthier than 88%
11%
Mental Health
healthier than 95%
8%
Climate / Disaster Risk
healthier than 96%
5%
About typical
Environmental Hazard
healthier than 56%
14%
Disability
healthier than 58%
7%
Holding it back
Chronic Disease Burden
healthier than 28%
21%
Healthcare Access
healthier than 10%
5%
Lifting this score
Social Need / SDOH
healthier than 92%
16%
Environmental Hazard
healthier than 80%
14%
Preventive Care
healthier than 97%
13%
Risk Behavior
healthier than 98%
11%
Mental Health
healthier than 99%
8%
Climate / Disaster Risk
healthier than 98%
5%
About typical
Disability
healthier than 46%
7%
Healthcare Access
healthier than 46%
5%
Holding it back
Chronic Disease Burden
healthier than 17%
21%
Lifting this score
Social Need / SDOH
healthier than 82%
16%
Preventive Care
in the top 0.00%
13%
Risk Behavior
healthier than 95%
11%
Mental Health
in the top 0.00%
8%
Climate / Disaster Risk
healthier than 95%
5%
About typical
Environmental Hazard
healthier than 41%
14%
Disability
healthier than 45%
7%
Healthcare Access
healthier than 50%
5%
Holding it back
Chronic Disease Burden
healthier than 9%
21%
“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
57722
South Dakotashares a border
Score 39.42
Closest healthier
57745
South Dakotashares a border
Score 60.47
Similar health profile
54211
Wisconsin98% similar profile
Score 60.12
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 | 34.9% | 30.9–38.9 |
| High blood pressure among adults | 41.2% | 36.6–45.8 |
| Cancer (non-skin) or melanoma among adults | 13.7% | 12.5–15.0 |
| Current asthma among adults | 9.8% | 8.6–11.0 |
| Coronary heart disease among adults | 9.2% | 8.2–10.3 |
| Chronic obstructive pulmonary disease among adults | 8.1% | 6.9–9.3 |
| Depression among adults | 18.7% | 15.7–21.9 |
| Diagnosed diabetes among adults | 14.1% | 12.1–16.2 |
| High cholesterol among adults who have ever been screened | 41.9% | 37.1–46.6 |
| Obesity among adults | 33.7% | 26.3–41.6 |
| Stroke among adults | 4.4% | 4.0–4.9 |
| All teeth lost among adults aged >=65 years | 11.9% | 9.7–14.5 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 6.6% | 5.4–7.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 83.0% | 80.1–85.7 |
| Visits to doctor for routine checkup within the past year among adults | 81.7% | 78.5–84.6 |
| Cholesterol screening among adults | 91.1% | 89.8–92.3 |
| Colorectal cancer screening among adults aged 45–75 years | 70.3% | 65.2–75.0 |
| Visited dentist or dental clinic in the past year among adults | 71.6% | 68.1–74.7 |
| Mammography use among women aged 50-74 years | 78.4% | 70.9–84.7 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 14.6% | 12.0–17.5 |
| Current cigarette smoking among adults | 13.7% | 11.4–16.0 |
| No leisure-time physical activity among adults | 24.9% | 20.4–29.6 |
| Short sleep duration among adults | 27.0% | 21.3–33.4 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 17.1% | 14.5–19.7 |
| Frequent mental distress among adults | 12.1% | 10.6–13.7 |
| Frequent physical distress among adults | 13.3% | 11.6–15.1 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 10.9% | 9.4–12.5 |
| Any disability among adults | 31.3% | 26.8–35.6 |
| Hearing disability among adults | 10.6% | 9.3–11.9 |
| Independent living disability among adults | 7.1% | 6.2–8.1 |
| Mobility disability among adults | 15.5% | 13.2–17.9 |
| Self-care disability among adults | 3.7% | 3.3–4.2 |
| Vision disability among adults | 4.5% | 4.0–5.0 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | SD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 10.0% | 10.6% (3.1–25.8%) n=32,364 | 8.8% (1.1–33.5%) n=364 |
| Uninsured 18–64 | 17.3% | 9.0% (1.5–24.3%) n=32,286 | 9.6% (0.0–33.2%) n=365 |
| No HS diploma (25+) | 6.2% | 7.9% (1.8–20.7%) n=32,505 | 6.0% (0.8–15.3%) n=366 |
| Bachelor's or higher (25+) | 34.0% | 23.3% (9.2–53.6%) n=32,505 | 24.6% (10.3–40.7%) n=366 |
| Unemployment rate (16+) | 1.8% | 3.9% (0.0–9.8%) n=32,274 | 1.1% (0.0–8.0%) n=365 |
| Households without a vehicle | 1.0% | 3.9% (0.0–12.5%) n=32,322 | 1.9% (0.0–9.6%) n=364 |
| Broadband subscription | 91.6% | 89.3% (75.1–97.1%) n=32,322 | 87.9% (73.7–96.3%) n=364 |
| Housing cost burden (≥30% income) | 27.8% | 23.7% (10.6–40.0%) n=32,322 | 17.5% (5.2–30.6%) n=364 |
| Homeownership rate | 80.4% | 78.7% (51.7–94.0%) n=32,322 | 79.9% (57.2–94.8%) n=364 |
| Crowded housing (>1 per room) | 4.6% | 1.3% (0.0–6.3%) n=32,322 | 0.6% (0.0–10.2%) n=364 |
| Foreign-born population | 2.8% | 2.6% (0.0–18.6%) n=32,553 | 0.6% (0.0–5.3%) n=367 |
| Single-parent households | 66.6% | 53.6% (37.3–74.1%) n=32,087 | 56.7% (32.7–81.4%) n=362 |
| Population 65+ | 36.4% | 19.4% (10.8–33.6%) n=32,553 | 20.3% (8.4–33.0%) n=367 |
| Median age | 57.9 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.5 yr (27.6–56.7) n=365 |
| Median household income | $83,469 | $72,070 ($46,039–$118,707) n=30,318 | $74,865 ($51,211–$102,582) n=336 |
| Median home value | $378,800 | $222,200 ($100,300–$579,820) n=30,049 | $177,400 ($79,000–$321,400) n=311 |
| Median gross rent | $1,087 | $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 | 80.2 yr ± 1.00 | 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 1.00 years of 80.2, 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