ZIP code
51105
in Sioux City, IowaPopulation 10,415
36.94/ 100
Ranked #28,559 of 32,066 US ZIPs (bottom 11.0%)
Ranked #918 of 922 Iowa ZIPs (bottom 0.5%)
Ranked #28 of 30 Sioux City, IA-NE-SD ZIPs (bottom 6.7%)
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.
Lithium in drinking water
190 µg/L
in the top 0.6% nationally
Lower is healthier
ST98thUS99thDefinition & 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 ›Uninsured (under 65)
20%
in the top 4.5% nationally
Lower is healthier
ST99thUS96thDefinition & source ›
The estimated share of adults aged 18–64 with no current health-insurance coverage.
Full methodology ›Crowded housing
12.2%
in the top 3.3% nationally
Lower is healthier
ST99thUS97thDefinition & source ›
The share of occupied homes with more than one person per room, the Census definition of crowded housing.
Full methodology ›Colon-cancer screening
55.5%
in the bottom 5.4% nationally
Higher is healthier
ST1stUS5thDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›Fair or poor health
31%
in the top 6.6% nationally
Lower is healthier
ST99thUS93rdDefinition & source ›
The estimated share of adults who rate their own general health as fair or poor.
Full methodology ›Food insecurity
31.1%
in the top 5.4% nationally
Lower is healthier
ST99thUS95thDefinition & source ›
The estimated share of adults who experienced food insecurity in the past 12 months.
Full methodology ›Lack of transportation
15.7%
in the top 5.4% nationally
Lower is healthier
ST99thUS95thDefinition & source ›
The estimated share of adults who lacked reliable transportation in the past 12 months.
Full methodology ›Transit access
4.7 per 1,000 residents
in the top 5.7% nationally
Higher is healthier
ST97thUS94thDefinition & source ›
The number of public-transit stops 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 ›Outer-floodplain exposure
6.3%
in the top 6.0% nationally
Lower is healthier
ST98thUS94thDefinition & 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 ›Cognitive disability
20.7%
in the top 6.9% nationally
Lower is healthier
ST99thUS93rdDefinition & source ›
The estimated share of adults with serious difficulty concentrating, remembering, or making decisions.
Full methodology ›The read
By the composite health measure, ZIP 51105, one of several in Sioux City, Iowa ranks in the bottom 11.0% nationally (28,559th) and the bottom 0.5% of Iowa (918th).
Several measures weigh most on this area's profile, and they come first: lithium in drinking water lies in the top 0.6% nationally, and modeled uninsured lands in the top 4.5% nationally. Crowded housing sits in the top 3.3% nationally, and modeled colon screening is in the bottom 5.4% nationally. Modeled fair or poor health settles in the top 6.6% nationally, food insecurity resides in the top 5.4% nationally, and transportation registers in the top 5.4% nationally. Outer-floodplain exposure rests in the top 6.0% nationally, and modeled cognitive disability stands in the top 6.9% nationally. On the better side, transit lies in the top 5.7% nationally.
Read against the ZIPs closest to it, outer-floodplain exposure runs far higher than the surrounding ZIPs on this measure. To spell things out, lithium in drinking water is a natural metal that dissolves into some groundwater and has no federal drinking-water limit yet. Outer-floodplain exposure is land with a lower but real 1-in-500 chance of flooding each year, nicknamed the "500-year floodplain". Close by, ZIP 51103, 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. Compare it against the US, this state and the Sioux City, IA-NE-SD metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Healthcare Access
healthier than 93%
5%
About typical
Chronic Disease Burden
healthier than 53%
21%
Holding it back
Social Need / SDOH
healthier than 7%
16%
Environmental Hazard
healthier than 10%
14%
Preventive Care
healthier than 4%
13%
Risk Behavior
healthier than 2%
11%
Mental Health
healthier than 30%
8%
Disability
healthier than 14%
7%
Climate / Disaster Risk
healthier than 39%
5%
Lifting this score
Healthcare Access
healthier than 97%
5%
About typical
Chronic Disease Burden
healthier than 55%
21%
Holding it back
Social Need / SDOH
healthier than 2%
16%
Environmental Hazard
healthier than 7%
14%
Preventive Care
in the bottom 0.3%
13%
Risk Behavior
in the bottom 0.5%
11%
Mental Health
healthier than 2%
8%
Disability
in the bottom 0.5%
7%
Climate / Disaster Risk
healthier than 20%
5%
Lifting this score
Healthcare Access
in the top 0.00%
5%
About typical
Environmental Hazard
healthier than 45%
14%
Climate / Disaster Risk
healthier than 48%
5%
Holding it back
Chronic Disease Burden
healthier than 38%
21%
Social Need / SDOH
in the bottom 0.00%
16%
Preventive Care
in the bottom 0.00%
13%
Risk Behavior
healthier than 3%
11%
Mental Health
healthier than 7%
8%
Disability
healthier than 7%
7%
“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
2 of our published findings list 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.
Below what income predicts
The ZIP codes that outlive their incomes
Estimated life expectancy is 73.5 ± 2.6 years. A median household income of $51,786 predicts 77.5 years — 4.0 years below.
Ranked #5,055 of the 5,842 ZIP codes this finding names, ordered by years above what income predicts, highest first.
Below its nearby ZIPs
The ZIP codes that outlive their neighbors
Estimated life expectancy is 73.5 ± 2.6 years. The 50 nearest ZIP codes with estimates average 80.1 years — 6.6 years below them.
Ranked #3,614 of the 3,687 ZIP codes this finding names, ordered by years above the nearby-ZIP average, highest first.
Nearby & similar ZIPs
Editorially selected — see how this ZIP compares to nearby and similar places.
Nearby
51101
Iowashares a border
Score 35.38
Closest healthier
51103
Iowashares a border
Score 43.26
Similar health profile
67210
Kansas97% similar profile
Score 35.61
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 | 23.2% | 21.0–25.6 |
| High blood pressure among adults | 36.0% | 33.0–39.2 |
| Cancer (non-skin) or melanoma among adults | 5.3% | 4.8–5.9 |
| Current asthma among adults | 10.5% | 9.4–11.7 |
| Coronary heart disease among adults | 7.1% | 6.4–7.8 |
| Chronic obstructive pulmonary disease among adults | 9.1% | 8.1–10.2 |
| Depression among adults | 20.6% | 18.1–23.5 |
| Diagnosed diabetes among adults | 15.1% | 13.5–16.9 |
| High cholesterol among adults who have ever been screened | 33.4% | 30.4–36.6 |
| Obesity among adults | 44.9% | 40.3–49.8 |
| Stroke among adults | 4.0% | 3.7–4.3 |
| All teeth lost among adults aged >=65 years | 19.3% | 16.2–22.8 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 20.0% | 17.5–22.8 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 74.4% | 71.6–76.9 |
| Visits to doctor for routine checkup within the past year among adults | 74.0% | 70.7–77.2 |
| Cholesterol screening among adults | 76.2% | 73.9–78.6 |
| Colorectal cancer screening among adults aged 45–75 years | 55.5% | 51.2–59.8 |
| Visited dentist or dental clinic in the past year among adults | 47.4% | 44.3–50.6 |
| Mammography use among women aged 50-74 years | 72.3% | 65.7–78.4 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 18.5% | 15.9–21.4 |
| Current cigarette smoking among adults | 22.9% | 20.2–25.5 |
| No leisure-time physical activity among adults | 39.6% | 35.5–43.6 |
| Short sleep duration among adults | 36.8% | 32.9–40.8 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 31.0% | 27.9–34.0 |
| Frequent mental distress among adults | 20.9% | 18.8–23.1 |
| Frequent physical distress among adults | 17.7% | 15.9–19.7 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 20.7% | 18.6–22.9 |
| Any disability among adults | 37.0% | 33.3–40.6 |
| Hearing disability among adults | 7.7% | 6.9–8.6 |
| Independent living disability among adults | 11.9% | 10.7–13.2 |
| Mobility disability among adults | 17.4% | 15.5–19.4 |
| Self-care disability among adults | 6.1% | 5.6–6.7 |
| Vision disability among adults | 8.9% | 8.1–9.7 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 31.4% | 27.8–35.2 |
| Food insecurity in the past 12 months among adults | 31.1% | 27.8–34.7 |
| Received food stamps in the past 12 months among adults | 28.6% | 25.6–32.0 |
| Housing insecurity in the past 12 months among adults | 22.5% | 19.9–25.3 |
| Lack of reliable transportation in the past 12 months among adults | 15.7% | 14.0–17.6 |
| Loneliness among adults | 37.5% | 33.3–41.7 |
| Utility services shut-off threat in the past 12 months among adults | 15.1% | 13.3–17.0 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | IA median (p10–p90) |
|---|---|---|---|
| Poverty rate | 21.6% | 10.6% (3.1–25.8%) n=32,364 | 8.5% (2.7–19.1%) n=931 |
| Uninsured 18–64 | 17.2% | 9.0% (1.5–24.3%) n=32,286 | 5.4% (0.7–14.7%) n=931 |
| No HS diploma (25+) | 32.2% | 7.9% (1.8–20.7%) n=32,505 | 5.1% (1.6–12.9%) n=932 |
| Bachelor's or higher (25+) | 7.8% | 23.3% (9.2–53.6%) n=32,505 | 20.9% (9.8–36.8%) n=932 |
| Unemployment rate (16+) | 6.2% | 3.9% (0.0–9.8%) n=32,274 | 2.2% (0.0–6.7%) n=932 |
| Households without a vehicle | 8.6% | 3.9% (0.0–12.5%) n=32,322 | 2.4% (0.0–7.9%) n=931 |
| Broadband subscription | 84.4% | 89.3% (75.1–97.1%) n=32,322 | 88.5% (77.9–95.1%) n=931 |
| Housing cost burden (≥30% income) | 28.9% | 23.7% (10.6–40.0%) n=32,322 | 18.2% (9.0–28.8%) n=931 |
| Homeownership rate | 48.2% | 78.7% (51.7–94.0%) n=32,322 | 82.1% (66.8–93.5%) n=931 |
| Crowded housing (>1 per room) | 12.2% | 1.3% (0.0–6.3%) n=32,322 | 0.4% (0.0–3.3%) n=931 |
| Foreign-born population | 24.0% | 2.6% (0.0–18.6%) n=32,553 | 1.0% (0.0–7.2%) n=932 |
| Single-parent households | 39.5% | 53.6% (37.3–74.1%) n=32,087 | 56.8% (43.7–75.5%) n=928 |
| Population 65+ | 6.3% | 19.4% (10.8–33.6%) n=32,553 | 20.2% (12.7–31.0%) n=932 |
| Median age | 29.6 yr | 42.2 yr (33.0–56.3) n=32,292 | 42.7 yr (34.1–54.7) n=931 |
| Median household income | $51,786 | $72,070 ($46,039–$118,707) n=30,318 | $73,848 ($55,055–$102,762) n=911 |
| Median home value | $96,200 | $222,200 ($100,300–$579,820) n=30,049 | $161,100 ($93,820–$278,170) n=892 |
| Median gross rent | $859 | $1,021 ($677–$1,912) n=25,670 | $825 ($614–$1,113) n=771 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | IA median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 73.5 yr ± 1.32 | 78.9 yr (74.7–82.8) n=31,308 | 80.0 yr (77.2–83.4) n=917 |
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 1.32 years of 73.5, 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