ZIP code
27816
in Castalia, North CarolinaPopulation 3,019
44.15/ 100
Ranked #23,278 of 32,066 US ZIPs (bottom 27%)
Ranked #610 of 793 North Carolina ZIPs (bottom 23%)
Ranked #46 of 48 Raleigh-Cary, NC ZIPs (bottom 4.2%)
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.
Median household income
$33,718
in the bottom 2.9% nationally
Higher is healthier
ST2ndUS3rdDefinition & source ›
The middle household income in this ZIP — half of households earn more, half earn less — in dollars per year.
Full methodology ›The read
On balance, and by the composite measure, Castalia, North Carolina (ZIP 27816) ranks in the bottom 27% nationally (23,278th) and the bottom 23% of North Carolina (610th).
Strengths and concerns sit side by side across the measures here: modeled arsenic settles in the bottom 14.7% nationally. Outer-floodplain exposure lies at the national minimum, shared with about 36% of ZIPs. On the other hand, household income resides in the bottom 2.9% nationally, fatal road crashes lands in the top 13.5% nationally, and modeled tooth loss registers in the top 13.1% nationally. Home broadband subscription sits in the bottom 15% nationally. Recreation rests at the national minimum, shared with about 35% of ZIPs. Distance to a nursing home is in the top 19% nationally. Physicians stands at the national minimum, shared with about 38% of ZIPs. Walkability settles in the bottom 19% nationally.
In plainer terms, arsenic is a natural groundwater contaminant, here a modeled estimate of the chance private-well levels exceed a benchmark. Outer-floodplain exposure is land with a lower but real 1-in-500 chance of flooding each year, nicknamed the "500-year floodplain". For a healthier nearby ZIP overall, look to ZIP 27549, 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 Raleigh-Cary, NC metro area.
Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes.
Lifting this score
Environmental Hazard
healthier than 85%
14%
About typical
Preventive Care
healthier than 47%
13%
Risk Behavior
healthier than 41%
11%
Climate / Disaster Risk
healthier than 43%
5%
Holding it back
Chronic Disease Burden
healthier than 23%
21%
Social Need / SDOH
healthier than 13%
16%
Mental Health
healthier than 28%
8%
Disability
healthier than 22%
7%
Healthcare Access
healthier than 30%
5%
Lifting this score
Environmental Hazard
healthier than 73%
14%
About typical
Climate / Disaster Risk
healthier than 57%
5%
Holding it back
Chronic Disease Burden
healthier than 33%
21%
Social Need / SDOH
healthier than 14%
16%
Preventive Care
healthier than 29%
13%
Risk Behavior
healthier than 20%
11%
Mental Health
healthier than 31%
8%
Disability
healthier than 30%
7%
Healthcare Access
healthier than 15%
5%
Lifting this score
Environmental Hazard
healthier than 96%
14%
Climate / Disaster Risk
healthier than 68%
5%
Holding it back
Chronic Disease Burden
healthier than 2%
21%
Social Need / SDOH
healthier than 2%
16%
Preventive Care
healthier than 34%
13%
Risk Behavior
healthier than 4%
11%
Mental Health
healthier than 17%
8%
Disability
healthier than 2%
7%
Healthcare Access
healthier than 4%
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 85.2; chronic-disease standing 22.7 — 63 points apart, cleaner on the environment than it is on chronic illness.
Ranked #1,565 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
27549
North Carolinashares a border
Score 46.65
Closest healthier
27856
North Carolinashares a border
Score 51.39
Similar health profile
04658
Maine98% similar profile
Score 37.41
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 | 31.7% | 28.9–34.5 |
| High blood pressure among adults | 42.6% | 39.1–45.9 |
| Cancer (non-skin) or melanoma among adults | 8.3% | 7.7–9.0 |
| Current asthma among adults | 11.6% | 10.4–12.8 |
| Coronary heart disease among adults | 8.2% | 7.5–9.0 |
| Chronic obstructive pulmonary disease among adults | 9.7% | 8.7–10.8 |
| Depression among adults | 24.8% | 21.7–27.7 |
| Diagnosed diabetes among adults | 15.1% | 13.5–16.8 |
| High cholesterol among adults who have ever been screened | 39.0% | 35.4–42.4 |
| Obesity among adults | 39.2% | 33.0–45.1 |
| Stroke among adults | 4.8% | 4.4–5.2 |
| All teeth lost among adults aged >=65 years | 21.7% | 18.7–25.0 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 12.4% | 10.6–14.2 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 79.3% | 76.9–81.4 |
| Visits to doctor for routine checkup within the past year among adults | 80.3% | 77.4–82.7 |
| Cholesterol screening among adults | 86.8% | 85.2–88.2 |
| Colorectal cancer screening among adults aged 45–75 years | 64.0% | 60.1–67.9 |
| Visited dentist or dental clinic in the past year among adults | 56.6% | 53.4–60.0 |
| Mammography use among women aged 50-74 years | 77.2% | 71.7–82.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 13.8% | 11.7–15.9 |
| Current cigarette smoking among adults | 18.1% | 16.0–20.3 |
| No leisure-time physical activity among adults | 29.8% | 26.0–33.6 |
| Short sleep duration among adults | 36.5% | 31.5–41.7 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 24.4% | 21.9–26.9 |
| Frequent mental distress among adults | 18.2% | 16.4–19.9 |
| Frequent physical distress among adults | 15.5% | 14.0–17.1 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 17.5% | 15.8–19.3 |
| Any disability among adults | 38.2% | 34.4–41.8 |
| Hearing disability among adults | 8.7% | 7.8–9.6 |
| Independent living disability among adults | 10.4% | 9.4–11.4 |
| Mobility disability among adults | 18.9% | 17.0–21.0 |
| Self-care disability among adults | 5.4% | 5.0–5.9 |
| Vision disability among adults | 6.9% | 6.3–7.5 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 25.6% | 22.6–28.7 |
| Food insecurity in the past 12 months among adults | 20.0% | 17.9–22.5 |
| Received food stamps in the past 12 months among adults | 17.0% | 14.9–19.2 |
| Housing insecurity in the past 12 months among adults | 15.2% | 13.6–17.1 |
| Lack of reliable transportation in the past 12 months among adults | 10.3% | 9.3–11.4 |
| Loneliness among adults | 34.2% | 30.3–38.4 |
| Utility services shut-off threat in the past 12 months among adults | 10.2% | 9.1–11.3 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | NC median (p10–p90) |
|---|---|---|---|
| Poverty rate | 11.4% | 10.6% (3.1–25.8%) n=32,364 | 13.0% (4.4–25.0%) n=793 |
| Uninsured 18–64 | 29.7% | 9.0% (1.5–24.3%) n=32,286 | 14.5% (5.7–24.9%) n=794 |
| No HS diploma (25+) | 33.9% | 7.9% (1.8–20.7%) n=32,505 | 10.4% (3.1–19.8%) n=798 |
| Bachelor's or higher (25+) | 4.9% | 23.3% (9.2–53.6%) n=32,505 | 22.8% (10.7–53.4%) n=798 |
| Unemployment rate (16+) | 2.9% | 3.9% (0.0–9.8%) n=32,274 | 4.2% (0.0–9.1%) n=796 |
| Households without a vehicle | 6.1% | 3.9% (0.0–12.5%) n=32,322 | 3.9% (0.0–10.2%) n=793 |
| Broadband subscription | 79.1% | 89.3% (75.1–97.1%) n=32,322 | 87.6% (76.2–96.3%) n=793 |
| Housing cost burden (≥30% income) | 31.1% | 23.7% (10.6–40.0%) n=32,322 | 24.7% (14.1–36.5%) n=793 |
| Homeownership rate | 69.2% | 78.7% (51.7–94.0%) n=32,322 | 75.0% (52.7–89.7%) n=793 |
| Crowded housing (>1 per room) | 2.5% | 1.3% (0.0–6.3%) n=32,322 | 1.4% (0.0–4.5%) n=793 |
| Foreign-born population | 6.6% | 2.6% (0.0–18.6%) n=32,553 | 4.2% (0.0–12.9%) n=799 |
| Single-parent households | 66.1% | 53.6% (37.3–74.1%) n=32,087 | 51.8% (39.2–70.1%) n=790 |
| Population 65+ | 40.8% | 19.4% (10.8–33.6%) n=32,553 | 19.7% (11.1–31.9%) n=799 |
| Median age | 58.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 42.5 yr (33.3–55.7) n=797 |
| Median household income | $33,718 | $72,070 ($46,039–$118,707) n=30,318 | $65,030 ($44,419–$97,111) n=749 |
| Median home value | $141,700 | $222,200 ($100,300–$579,820) n=30,049 | $223,850 ($113,970–$452,990) n=758 |
| Median gross rent | $873 | $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 | 76.3 yr ± 0.79 | 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 0.79 years of 76.3, 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