ZIP code
28774
in Sapphire, North CarolinaPopulation 1,451
65.09/ 100
Ranked #1,973 of 32,066 US ZIPs (top 6.2%)
Ranked #41 of 793 North Carolina ZIPs (top 5.2%)
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.
Arsenic in groundwater
0.83%
in the bottom 0.4% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The modeled probability that untreated groundwater in this area — the source private wells draw on — exceeds the federal arsenic limit of 10 micrograms per liter.
A modeled likelihood for untreated groundwater, the source drawn on by private wells, which are federally unregulated. It is not a measurement of treated water delivered by a public system, and it is not a test of any individual well.
Full methodology ›Housing insecurity
5.0%
in the bottom 0.7% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The estimated share of adults who experienced housing insecurity in the past 12 months.
Full methodology ›Utility shut-off threat
3.2%
in the bottom 0.9% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The estimated share of adults whose household was threatened with a utility shut-off in the past 12 months.
Full methodology ›Tree cover
90.7%
in the top 1.2% nationally
Higher is healthier
ST99thUS99thDefinition & source ›
The share of this ZIP’s land area covered by forest.
Full methodology ›Median household income
$154,635
in the top 3.4% nationally
Higher is healthier
ST99thUS97thDefinition & source ›
The middle household income in this ZIP — half of households earn more, half earn less — in dollars per year.
Full methodology ›Lack of transportation
3.9%
in the bottom 1.3% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The estimated share of adults who lacked reliable transportation in the past 12 months.
Full methodology ›Short sleep
26%
in the bottom 0.8% nationally
Lower is healthier
ST1stUS1stDefinition & source ›
The estimated share of adults who usually sleep less than seven hours in a 24-hour period.
Full methodology ›Colon-cancer screening
77.6%
in the top 0.8% nationally
Higher is healthier
ST99thUS99thDefinition & source ›
The estimated share of adults aged 45–75 who are up to date on colorectal-cancer screening.
Full methodology ›Food insecurity
6.5%
in the bottom 2.4% nationally
Lower is healthier
ST1stUS2ndDefinition & source ›
The estimated share of adults who experienced food insecurity in the past 12 months.
Full methodology ›Loneliness
26.9%
in the bottom 2.8% nationally
Lower is healthier
ST2ndUS3rdDefinition & source ›
The estimated share of adults who report feeling lonely.
Full methodology ›The read
Sapphire, North Carolina (ZIP 28774), by its overall standing, sits in the top 6.2% healthiest ZIPs nationally (1,973rd) and the top 5.2% of North Carolina (41st).
Both sides of the picture show up plainly in this area's numbers: modeled arsenic registers in the bottom 0.4% nationally, housing insecurity stands in the bottom 0.7% nationally, and utility shutoff lands in the bottom 0.9% nationally. Modeled tree cover is in the top 1.2% nationally, household income resides in the top 3.4% nationally, and modeled transportation rests in the bottom 1.3% nationally. Modeled short sleep lies in the bottom 0.8% nationally, and colon screening sits in the top 0.8% nationally. Modeled food insecurity settles in the bottom 2.4% nationally, and loneliness registers in the bottom 2.8% nationally.
Defined in plain terms, arsenic is a natural groundwater contaminant, here a modeled estimate of the chance private-well levels exceed a benchmark. The nearest ZIP ranking healthier overall is ZIP 28717, 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
Social Need / SDOH
healthier than 96%
16%
Environmental Hazard
healthier than 96%
14%
Preventive Care
in the top 0.8%
13%
Risk Behavior
in the top 0.8%
11%
Mental Health
healthier than 92%
8%
Disability
healthier than 72%
7%
Climate / Disaster Risk
healthier than 86%
5%
About typical
Healthcare Access
healthier than 44%
5%
Holding it back
Chronic Disease Burden
healthier than 30%
21%
Lifting this score
Social Need / SDOH
healthier than 95%
16%
Environmental Hazard
healthier than 87%
14%
Preventive Care
healthier than 99%
13%
Risk Behavior
in the top 0.3%
11%
Mental Health
in the top 0.7%
8%
Disability
healthier than 85%
7%
Climate / Disaster Risk
healthier than 97%
5%
About typical
Chronic Disease Burden
healthier than 42%
21%
Holding it back
Healthcare Access
healthier than 31%
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.
Clean environment, heavy chronic burden
Where the environment and chronic illness point in opposite directions
Environmental-hazard standing 95.5 (top 10%); chronic-disease standing 30.3 — 65 points apart, cleaner on the environment than it is on chronic illness.
Ranked #1,384 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
28712
North Carolinashares a border
Score 57.14
Closest healthier
28717
North Carolinashares a border
Score 66.71
Similar health profile
02653
Massachusetts99% similar profile
Score 66.12
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 | 37.1% | 33.6–40.9 |
| High blood pressure among adults | 43.7% | 39.8–47.8 |
| Cancer (non-skin) or melanoma among adults | 14.7% | 13.4–16.1 |
| Current asthma among adults | 9.6% | 8.6–10.8 |
| Coronary heart disease among adults | 8.8% | 7.8–10.1 |
| Chronic obstructive pulmonary disease among adults | 7.7% | 6.2–9.5 |
| Depression among adults | 21.6% | 18.8–24.5 |
| Diagnosed diabetes among adults | 13.0% | 11.2–14.9 |
| High cholesterol among adults who have ever been screened | 45.2% | 41.4–49.3 |
| Obesity among adults | 30.5% | 25.2–36.7 |
| Stroke among adults | 4.1% | 3.5–4.7 |
| All teeth lost among adults aged >=65 years | 7.0% | 5.9–8.3 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 6.7% | 5.3–8.2 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 84.6% | 82.2–86.7 |
| Visits to doctor for routine checkup within the past year among adults | 85.8% | 83.7–87.9 |
| Cholesterol screening among adults | 93.8% | 92.8–94.7 |
| Colorectal cancer screening among adults aged 45–75 years | 77.6% | 74.4–80.6 |
| Visited dentist or dental clinic in the past year among adults | 75.0% | 72.7–77.2 |
| Mammography use among women aged 50-74 years | 79.5% | 74.2–84.0 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 11.5% | 9.8–13.5 |
| Current cigarette smoking among adults | 9.3% | 7.4–11.5 |
| No leisure-time physical activity among adults | 20.0% | 16.2–24.3 |
| Short sleep duration among adults | 26.0% | 22.0–30.3 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 15.3% | 12.8–18.3 |
| Frequent mental distress among adults | 11.4% | 10.1–13.0 |
| Frequent physical distress among adults | 12.2% | 10.5–14.0 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 10.0% | 8.5–11.6 |
| Any disability among adults | 30.4% | 26.4–34.9 |
| Hearing disability among adults | 10.0% | 8.8–11.4 |
| Independent living disability among adults | 6.1% | 5.1–7.2 |
| Mobility disability among adults | 14.7% | 12.2–17.5 |
| Self-care disability among adults | 3.1% | 2.6–3.7 |
| Vision disability among adults | 3.9% | 3.3–4.6 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 16.7% | 14.2–19.4 |
| Food insecurity in the past 12 months among adults | 6.5% | 5.0–8.2 |
| Received food stamps in the past 12 months among adults | 4.6% | 3.4–6.0 |
| Housing insecurity in the past 12 months among adults | 5.0% | 4.1–6.0 |
| Lack of reliable transportation in the past 12 months among adults | 3.9% | 3.3–4.6 |
| Loneliness among adults | 26.9% | 23.1–30.8 |
| Utility services shut-off threat in the past 12 months among adults | 3.2% | 2.7–3.8 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | NC median (p10–p90) |
|---|---|---|---|
| Poverty rate | 3.2% | 10.6% (3.1–25.8%) n=32,364 | 13.0% (4.4–25.0%) n=793 |
| Uninsured 18–64 | 10.8% | 9.0% (1.5–24.3%) n=32,286 | 14.5% (5.7–24.9%) n=794 |
| No HS diploma (25+) | 3.5% | 7.9% (1.8–20.7%) n=32,505 | 10.4% (3.1–19.8%) n=798 |
| Bachelor's or higher (25+) | 68.3% | 23.3% (9.2–53.6%) n=32,505 | 22.8% (10.7–53.4%) n=798 |
| Unemployment rate (16+) | 0.0% | 3.9% (0.0–9.8%) n=32,274 | 4.2% (0.0–9.1%) n=796 |
| Households without a vehicle | 0.0% | 3.9% (0.0–12.5%) n=32,322 | 3.9% (0.0–10.2%) n=793 |
| Broadband subscription | 99.0% | 89.3% (75.1–97.1%) n=32,322 | 87.6% (76.2–96.3%) n=793 |
| Housing cost burden (≥30% income) | 22.0% | 23.7% (10.6–40.0%) n=32,322 | 24.7% (14.1–36.5%) n=793 |
| Homeownership rate | 88.6% | 78.7% (51.7–94.0%) n=32,322 | 75.0% (52.7–89.7%) n=793 |
| Crowded housing (>1 per room) | 1.0% | 1.3% (0.0–6.3%) n=32,322 | 1.4% (0.0–4.5%) n=793 |
| Foreign-born population | 3.9% | 2.6% (0.0–18.6%) n=32,553 | 4.2% (0.0–12.9%) n=799 |
| Single-parent households | 72.0% | 53.6% (37.3–74.1%) n=32,087 | 51.8% (39.2–70.1%) n=790 |
| Population 65+ | 41.8% | 19.4% (10.8–33.6%) n=32,553 | 19.7% (11.1–31.9%) n=799 |
| Median age | 63.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 42.5 yr (33.3–55.7) n=797 |
| Median household income | $154,635 | $72,070 ($46,039–$118,707) n=30,318 | $65,030 ($44,419–$97,111) n=749 |
| Median home value | $797,900 | $222,200 ($100,300–$579,820) n=30,049 | $223,850 ($113,970–$452,990) n=758 |
| Median gross rent | — | $1,021 ($677–$1,912) n=25,670 | $957 ($715–$1,575) n=687 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | NC median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 80.2 yr ± 1.88 | 78.9 yr (74.7–82.8) n=31,308 | 77.3 yr (74.6–80.8) n=747 |
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 1.88 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