ZIP code
57021
in Davis, South DakotaPopulation 319
52.32/ 100
Ranked #13,016 of 32,066 US ZIPs (top 41%)
Ranked #221 of 360 South Dakota ZIPs (bottom 39%)
Ranked #40 of 47 Sioux Falls, SD-MN ZIPs (bottom 14.9%)
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
4.1 pCi/L
in the top 1.6% nationally
Lower is healthier
ST89thUS98thDefinition & 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 ›Outer-floodplain exposure
12.1%
in the top 3.2% nationally
Lower is healthier
ST94thUS97thDefinition & 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 ›Short sleep
28.9%
in the bottom 5.5% nationally
Lower is healthier
ST35thUS5thDefinition & source ›
The estimated share of adults who usually sleep less than seven hours in a 24-hour period.
Full methodology ›Lithium in drinking water
65 µg/L
in the top 7.3% nationally
Lower is healthier
ST80thUS93rdDefinition & 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 ›Floodplain exposure
33.4%
in the top 8.6% nationally
Lower is healthier
ST98thUS91stDefinition & 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 ›Distance to a community health center
17.4 mi
in the top 10.0% nationally
Lower is healthier
ST57thUS90thDefinition & 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 ›Industrial-pollution burden
in the top 40% nationally
Lower is healthier
ST95thUS60thDefinition & 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 ›The read
On balance, and by the composite measure, Davis, South Dakota (ZIP 57021) ranks in the top 41% healthiest ZIPs nationally (13,016th) and the bottom 39% of South Dakota (221st).
The measures split the difference for this area: modeled short sleep settles in the bottom 5.5% nationally. Households without a vehicle lies at the national minimum, shared with about 16% of ZIPs. Against that, modeled radon resides in the top 1.6% nationally, outer-floodplain exposure lands in the top 3.2% nationally, and lithium in drinking water registers in the top 7.3% nationally. Floodplain exposure sits in the top 8.6% nationally, distance to a community health center rests in the top 10.0% nationally, and walkability is in the bottom 11.5% nationally. Modeled fine-particle stands in the top 11.7% nationally, and slow internet speeds settles in the top 13.0% nationally.
Compared with the ZIPs it borders, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. In plainer terms, radon is a radioactive soil gas the EPA identifies as the top cause of lung cancer in nonsmokers. Lithium in drinking water is a natural metal that dissolves into some groundwater and has no federal drinking-water limit yet. 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 57014, 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. Compare it against the US, this state and the Sioux Falls, SD-MN metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Preventive Care
healthier than 61%
13%
Risk Behavior
healthier than 71%
11%
Mental Health
healthier than 87%
8%
About typical
Chronic Disease Burden
healthier than 53%
21%
Disability
healthier than 55%
7%
Holding it back
Social Need / SDOH
healthier than 29%
16%
Environmental Hazard
healthier than 30%
14%
Climate / Disaster Risk
healthier than 18%
5%
Healthcare Access
healthier than 10%
5%
Lifting this score
Risk Behavior
healthier than 63%
11%
Mental Health
healthier than 77%
8%
About typical
Chronic Disease Burden
healthier than 42%
21%
Preventive Care
healthier than 41%
13%
Disability
healthier than 41%
7%
Healthcare Access
healthier than 47%
5%
Holding it back
Social Need / SDOH
healthier than 35%
16%
Environmental Hazard
healthier than 30%
14%
Climate / Disaster Risk
healthier than 2%
5%
Lifting this score
Mental Health
healthier than 86%
8%
About typical
Environmental Hazard
healthier than 47%
14%
Risk Behavior
healthier than 42%
11%
Holding it back
Chronic Disease Burden
healthier than 6%
21%
Social Need / SDOH
healthier than 6%
16%
Preventive Care
healthier than 31%
13%
Disability
healthier than 6%
7%
Climate / Disaster Risk
healthier than 3%
5%
Healthcare Access
healthier than 8%
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
57014
South Dakotashares a border
Score 54.22
Closest healthier
57015
South Dakotashares a border
Score 56.92
Similar health profile
33001
Florida98% similar profile
Score 59.39
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 | 28.9% | 25.4–32.5 |
| High blood pressure among adults | 36.4% | 32.0–40.8 |
| Cancer (non-skin) or melanoma among adults | 11.1% | 10.0–12.3 |
| Current asthma among adults | 9.6% | 8.4–10.9 |
| Coronary heart disease among adults | 8.6% | 7.4–9.8 |
| Chronic obstructive pulmonary disease among adults | 7.7% | 6.4–9.3 |
| Depression among adults | 19.7% | 16.5–23.2 |
| Diagnosed diabetes among adults | 12.6% | 10.7–14.7 |
| High cholesterol among adults who have ever been screened | 36.9% | 32.4–41.4 |
| Obesity among adults | 33.6% | 25.7–42.2 |
| Stroke among adults | 4.1% | 3.5–4.7 |
| All teeth lost among adults aged >=65 years | 11.7% | 9.3–14.3 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 8.4% | 6.4–10.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 79.2% | 76.1–81.8 |
| Visits to doctor for routine checkup within the past year among adults | 77.0% | 73.1–80.6 |
| Cholesterol screening among adults | 85.9% | 83.7–87.9 |
| Colorectal cancer screening among adults aged 45–75 years | 68.1% | 62.9–72.8 |
| Visited dentist or dental clinic in the past year among adults | 66.4% | 62.8–69.9 |
| Mammography use among women aged 50-74 years | 77.2% | 69.3–83.9 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 17.5% | 14.4–21.0 |
| Current cigarette smoking among adults | 14.9% | 12.0–18.2 |
| No leisure-time physical activity among adults | 24.8% | 20.0–30.1 |
| Short sleep duration among adults | 28.9% | 22.9–35.2 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 17.4% | 14.4–20.9 |
| Frequent mental distress among adults | 14.2% | 12.2–16.3 |
| Frequent physical distress among adults | 12.8% | 10.9–15.0 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 12.9% | 10.8–15.1 |
| Any disability among adults | 30.9% | 26.1–35.9 |
| Hearing disability among adults | 10.1% | 8.8–11.5 |
| Independent living disability among adults | 7.6% | 6.4–9.0 |
| Mobility disability among adults | 14.1% | 11.7–16.8 |
| Self-care disability among adults | 3.7% | 3.1–4.3 |
| Vision disability among adults | 4.6% | 3.9–5.4 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | SD median (p10–p90) |
|---|---|---|---|
| Poverty rate | 6.9% | 10.6% (3.1–25.8%) n=32,364 | 8.8% (1.1–33.5%) n=364 |
| Uninsured 18–64 | 4.9% | 9.0% (1.5–24.3%) n=32,286 | 9.6% (0.0–33.2%) n=365 |
| No HS diploma (25+) | 7.4% | 7.9% (1.8–20.7%) n=32,505 | 6.0% (0.8–15.3%) n=366 |
| Bachelor's or higher (25+) | 51.7% | 23.3% (9.2–53.6%) n=32,505 | 24.6% (10.3–40.7%) n=366 |
| Unemployment rate (16+) | 5.0% | 3.9% (0.0–9.8%) n=32,274 | 1.1% (0.0–8.0%) n=365 |
| Households without a vehicle | 0.0% | 3.9% (0.0–12.5%) n=32,322 | 1.9% (0.0–9.6%) n=364 |
| Broadband subscription | 84.1% | 89.3% (75.1–97.1%) n=32,322 | 87.9% (73.7–96.3%) n=364 |
| Housing cost burden (≥30% income) | 15.9% | 23.7% (10.6–40.0%) n=32,322 | 17.5% (5.2–30.6%) n=364 |
| Homeownership rate | 78.6% | 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 | 0.0% | 2.6% (0.0–18.6%) n=32,553 | 0.6% (0.0–5.3%) n=367 |
| Single-parent households | 22.0% | 53.6% (37.3–74.1%) n=32,087 | 56.7% (32.7–81.4%) n=362 |
| Population 65+ | 8.5% | 19.4% (10.8–33.6%) n=32,553 | 20.3% (8.4–33.0%) n=367 |
| Median age | 46.0 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.5 yr (27.6–56.7) n=365 |
| Median household income | $76,488 | $72,070 ($46,039–$118,707) n=30,318 | $74,865 ($51,211–$102,582) n=336 |
| Median home value | — | $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 | 80.1 yr ± 1.09 | 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 1.09 years of 80.1, 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