ZIP code
57223
in Castlewood, South DakotaPopulation 1,429
55.32/ 100
Ranked #9,065 of 32,066 US ZIPs (top 28%)
Ranked #117 of 360 South Dakota ZIPs (top 33%)
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
4.2 pCi/L
in the top 1.4% nationally
Lower is healthier
ST93rdUS99thDefinition & 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 ›Distance to a Superfund site
122.1 mi
in the top 2.6% nationally
Higher is healthier
ST69thUS97thDefinition & 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 ›Fiber broadband
99.3%
in the top 4.0% nationally
Higher is healthier
ST74thUS96thDefinition & source ›
The share of homes where fiber-optic internet service is available.
Full methodology ›Outer-floodplain exposure
6.2%
in the top 6.1% nationally
Lower is healthier
ST84thUS94thDefinition & source ›
The share of this ZIP’s land area inside FEMA’s 0.2%-annual-chance flood band — the “500-year” zone, a lower but real 1-in-500 yearly chance.
Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.
Full methodology ›Fine-particle (PM2.5) exceedance
1.4%
in the top 6.9% nationally
Lower is healthier
ST89thUS93rdDefinition & 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 ›Distance to a community health center
22.3 mi
in the top 7.0% nationally
Lower is healthier
ST67thUS93rdDefinition & 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 ›Walkability
2 intersections/sq mi
in the bottom 7.5% nationally
Higher is healthier
ST57thUS7thDefinition & source ›
The number of street intersections per square mile — a standard street-connectivity measure; denser networks correlate with more walkable neighborhoods.
Full methodology ›Civic-institution access
0.7 per 1,000 residents
in the top 7.7% nationally
Higher is healthier
ST87thUS92ndDefinition & source ›
The number of civic and social organizations 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 ›Floodplain exposure
19.6%
in the top 18% nationally
Lower is healthier
ST92ndUS82ndDefinition & source ›
The share of this ZIP’s land area inside FEMA’s 1%-annual-chance floodplain — the “100-year” flood zone, where flooding has about a 1-in-100 chance in any given year.
Measured from FEMA’s mapped flood panels. Where a panel has not been mapped, no value is published for that ZIP — those ZIPs are absent from this comparison rather than counted as unexposed.
Full methodology ›Dry extreme heat
12.9 days/year
in the top 31% nationally
Lower is healthier
ST8thUS69thDefinition & source ›
The average number of days per year with a modeled daily high of at least 95 °F.
Full methodology ›The read
By the composite measure, Castlewood, South Dakota (ZIP 57223) sits in the top 28% healthiest ZIPs nationally (9,065th) and the top 33% of South Dakota (117th).
The readings split fairly evenly between strengths and concerns: distance to a Superfund site lands in the top 2.6% nationally, fiber broadband resides in the top 4.0% nationally, and civic lies in the top 7.7% nationally. Poverty settles in the bottom 11.2% nationally, and modeled short sleep stands in the bottom 14.5% nationally. Working the other way, modeled radon is in the top 1.4% nationally, and outer-floodplain exposure rests in the top 6.1% nationally. Modeled fine-particle sits in the top 6.9% nationally, and distance to a community health center registers in the top 7.0% nationally. Walkability lands in the bottom 7.5% nationally.
Compared with the ZIPs that surround it, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. In plain language, radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. 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. ZIP 57212, just across the boundary, ranks healthier overall.
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 72%
21%
Preventive Care
healthier than 64%
13%
Risk Behavior
healthier than 64%
11%
Mental Health
healthier than 85%
8%
Disability
healthier than 76%
7%
About typical
Climate / Disaster Risk
healthier than 42%
5%
Holding it back
Social Need / SDOH
healthier than 25%
16%
Environmental Hazard
healthier than 24%
14%
Healthcare Access
healthier than 8%
5%
Lifting this score
Chronic Disease Burden
healthier than 78%
21%
Mental Health
healthier than 66%
8%
Disability
healthier than 83%
7%
About typical
Preventive Care
healthier than 46%
13%
Risk Behavior
healthier than 45%
11%
Healthcare Access
healthier than 41%
5%
Holding it back
Social Need / SDOH
healthier than 28%
16%
Environmental Hazard
healthier than 12%
14%
Climate / Disaster Risk
healthier than 18%
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 ›
Findings that name this ZIP
One of our published findings lists this ZIP code. Each finding compares one published measure against a stated benchmark, and names only the ZIP codes whose estimates are reliable enough to rank. See all surprising findings.
Heavy environment, light chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 20.8; chronic-disease standing 72.0 — 51 points apart, heavier on the environment than it is on chronic illness.
Ranked #14,505 of the 18,187 ZIP codes this finding names, ordered by the gap from cleanest environment to heaviest chronic burden, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
57201
South Dakotashares a border
Score 53.13
Closest healthier
57212
South Dakotashares a border
Score 56.26
Similar health profile
57024
South Dakota99% similar profile
Score 53.61
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 | 26.0% | 22.9–29.7 |
| High blood pressure among adults | 32.1% | 28.2–36.7 |
| Cancer (non-skin) or melanoma among adults | 9.8% | 8.9–10.8 |
| Current asthma among adults | 10.0% | 8.8–11.3 |
| Coronary heart disease among adults | 6.6% | 5.8–7.4 |
| Chronic obstructive pulmonary disease among adults | 6.3% | 5.4–7.3 |
| Depression among adults | 19.9% | 16.8–23.6 |
| Diagnosed diabetes among adults | 10.6% | 9.1–12.4 |
| High cholesterol among adults who have ever been screened | 34.8% | 30.6–39.4 |
| Obesity among adults | 35.3% | 27.9–44.3 |
| Stroke among adults | 3.3% | 2.9–3.7 |
| All teeth lost among adults aged >=65 years | 11.6% | 9.3–14.2 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 7.8% | 6.4–9.5 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 76.8% | 73.7–79.9 |
| Visits to doctor for routine checkup within the past year among adults | 76.1% | 72.3–79.9 |
| Cholesterol screening among adults | 86.2% | 84.3–88.1 |
| Colorectal cancer screening among adults aged 45–75 years | 68.1% | 63.2–73.0 |
| Visited dentist or dental clinic in the past year among adults | 69.7% | 66.2–73.1 |
| Mammography use among women aged 50-74 years | 78.6% | 71.2–85.0 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 18.6% | 15.5–22.4 |
| Current cigarette smoking among adults | 14.4% | 12.0–17.1 |
| No leisure-time physical activity among adults | 22.7% | 18.8–27.4 |
| Short sleep duration among adults | 31.0% | 25.3–37.3 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 15.4% | 13.2–18.0 |
| Frequent mental distress among adults | 14.5% | 12.7–16.6 |
| Frequent physical distress among adults | 12.0% | 10.5–13.8 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 12.4% | 10.9–14.3 |
| Any disability among adults | 27.9% | 24.0–32.4 |
| Hearing disability among adults | 8.0% | 7.1–9.1 |
| Independent living disability among adults | 6.8% | 6.0–7.8 |
| Mobility disability among adults | 11.8% | 10.0–13.8 |
| Self-care disability among adults | 3.1% | 2.8–3.5 |
| Vision disability among adults | 3.9% | 3.5–4.4 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | SD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 3.4% | 10.6% (3.1–25.8%) n=32,364 | 8.8% (1.1–33.5%) n=364 |
| Uninsured 18–64 | 8.9% | 9.0% (1.5–24.3%) n=32,286 | 9.6% (0.0–33.2%) n=365 |
| No HS diploma (25+) | 2.1% | 7.9% (1.8–20.7%) n=32,505 | 6.0% (0.8–15.3%) n=366 |
| Bachelor's or higher (25+) | 28.5% | 23.3% (9.2–53.6%) n=32,505 | 24.6% (10.3–40.7%) n=366 |
| Unemployment rate (16+) | 1.0% | 3.9% (0.0–9.8%) n=32,274 | 1.1% (0.0–8.0%) n=365 |
| Households without a vehicle | 2.7% | 3.9% (0.0–12.5%) n=32,322 | 1.9% (0.0–9.6%) n=364 |
| Broadband subscription | 87.1% | 89.3% (75.1–97.1%) n=32,322 | 87.9% (73.7–96.3%) n=364 |
| Housing cost burden (≥30% income) | 21.2% | 23.7% (10.6–40.0%) n=32,322 | 17.5% (5.2–30.6%) n=364 |
| Homeownership rate | 87.6% | 78.7% (51.7–94.0%) n=32,322 | 79.9% (57.2–94.8%) n=364 |
| Crowded housing (>1 per room) | 1.2% | 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 | 46.2% | 53.6% (37.3–74.1%) n=32,087 | 56.7% (32.7–81.4%) n=362 |
| Population 65+ | 13.0% | 19.4% (10.8–33.6%) n=32,553 | 20.3% (8.4–33.0%) n=367 |
| Median age | 34.3 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.5 yr (27.6–56.7) n=365 |
| Median household income | $92,424 | $72,070 ($46,039–$118,707) n=30,318 | $74,865 ($51,211–$102,582) n=336 |
| Median home value | $236,600 | $222,200 ($100,300–$579,820) n=30,049 | $177,400 ($79,000–$321,400) n=311 |
| Median gross rent | $1,133 | $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 | 84.3 yr ± 2.00 | 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 2.00 years of 84.3, 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