ZIP code
29927
in Hardeeville, South CarolinaPopulation 11,373
45.03/ 100
Ranked #22,375 of 32,066 US ZIPs (bottom 30%)
Ranked #249 of 417 South Carolina ZIPs (bottom 40%)
Ranked #15 of 19 Hilton Head Island-Bluffton-Port Royal, SC ZIPs (bottom 21%)
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.
Floodplain exposure
69.7%
in the top 1.7% nationally
Lower is healthier
ST97thUS98thDefinition & 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 ›Fatal road crashes
64.2 per 100,000 residents per year
in the top 1.9% nationally
Lower is healthier
ST93rdUS98thDefinition & source ›
The annual rate of fatal road crashes per 100,000 residents, pooled over a ten-year window.
A rate per resident population. Where a ZIP has too few residents for the rate to be reliable — about 30% of US ZIPs — no value is published rather than an unstable one; those ZIPs are absent from this comparison, not counted as crash-free.
Full methodology ›Grocery access
0.22 per 1,000 residents
in the top 6.2% nationally
Higher is healthier
ST89thUS94thDefinition & source ›
The number of full supermarkets 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. ZipVitals’s food-access signal is derived from these in-ZIP densities — it is not USDA’s food-desert designation, which measures distance to the nearest supermarket. Where a leg is missing, a ZIP reads “not determinable,” never “not a food desert.”
Full methodology ›Uninsured (under 65)
17.4%
in the top 7.1% nationally
Lower is healthier
ST94thUS93rdDefinition & source ›
The estimated share of adults aged 18–64 with no current health-insurance coverage.
Full methodology ›Fiber broadband
97.2%
in the top 7.9% nationally
Higher is healthier
ST87thUS92ndDefinition & source ›
The share of homes where fiber-optic internet service is available.
Full methodology ›Humid extreme heat
137.1 days/year
in the top 8.1% nationally
Lower is healthier
ST99thUS92ndDefinition & source ›
The average number of days per year when modeled heat stress — temperature, humidity, sun, and wind combined — reaches levels hard on the body outdoors.
Full methodology ›Physician access
1.8 per 1,000 residents
in the top 8.9% nationally
Higher is healthier
ST93rdUS91stDefinition & source ›
The number of physicians’ offices located 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 ›Radon
0.8 pCi/L
in the bottom 6.3% nationally
Lower is healthier
ST17thUS6thDefinition & 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 ›Loud transportation noise
1.4%
in the top 12.6% nationally
Lower is healthier
ST95thUS87thDefinition & source ›
The modeled share of residents exposed to average road, rail, and aviation noise at or above 65 decibels — around the volume of normal conversation.
Full methodology ›Slow internet speeds
0.77%
in the top 14.1% nationally
Lower is healthier
ST90thUS86thDefinition & source ›
The share of homes whose fastest available download speed is under 10 Mbps.
Full methodology ›Cross-source signals
Combined exposures in this ZIP
More than one environmental exposure stands out in this ZIP. Each is established independently and shown on its own above; they are grouped here for context — not because one causes the other.
This area ranks among the highest 10% of US ZIP codes for both humid-heat days and flood exposure.
See the full flooding, evacuation & humid-heat analysis →
The read
By the composite health measure, Hardeeville, South Carolina (ZIP 29927) ranks in the bottom 30% nationally (22,375th) and the bottom 40% of South Carolina (249th).
A number of measures mark where this area is under strain: floodplain exposure lands in the top 1.7% nationally, and fatal road crashes sits in the top 1.9% nationally. Modeled uninsured is in the top 7.1% nationally, and humid heat settles in the top 8.1% nationally. Modeled food insecurity resides in the top 11.5% nationally, and housing insecurity registers in the top 12.1% nationally. On the brighter side, grocery rests in the top 6.2% nationally, fiber broadband stands in the top 7.9% nationally, and physicians lies in the top 8.9% nationally. Distance to a community health center lands at the national minimum, shared with about 23% of ZIPs.
Read against the ZIPs closest to it, outer-floodplain exposure runs far lower than the surrounding ZIPs on this measure. To spell things out, floodplain exposure is land with about a 1-in-100 chance of flooding each year, nicknamed the "100-year floodplain". Humid heat is a modeled heat-stress measure combining temperature, humidity, sun, and wind to gauge heat on the body outdoors. Distance to a community health center is a federally funded (HRSA) community health center serving everyone regardless of ability to pay. Close by, ZIP 29909, 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 Hilton Head Island-Bluffton-Port Royal, SC 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 73%
5%
About typical
Chronic Disease Burden
healthier than 41%
21%
Social Need / SDOH
healthier than 46%
16%
Risk Behavior
healthier than 47%
11%
Mental Health
healthier than 59%
8%
Holding it back
Environmental Hazard
healthier than 12%
14%
Preventive Care
healthier than 36%
13%
Disability
healthier than 26%
7%
Climate / Disaster Risk
healthier than 2%
5%
Lifting this score
Chronic Disease Burden
healthier than 63%
21%
Social Need / SDOH
healthier than 60%
16%
Mental Health
healthier than 69%
8%
Healthcare Access
healthier than 72%
5%
About typical
Risk Behavior
healthier than 58%
11%
Disability
healthier than 46%
7%
Holding it back
Environmental Hazard
healthier than 9%
14%
Preventive Care
healthier than 21%
13%
Climate / Disaster Risk
in the bottom 0.3%
5%
Lifting this score
Healthcare Access
healthier than 67%
5%
About typical
Chronic Disease Burden
healthier than 50%
21%
Holding it back
Social Need / SDOH
healthier than 39%
16%
Environmental Hazard
in the bottom 0.00%
14%
Preventive Care
healthier than 17%
13%
Risk Behavior
healthier than 33%
11%
Mental Health
healthier than 17%
8%
Disability
healthier than 33%
7%
Climate / Disaster Risk
in the bottom 0.00%
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
29909
South Carolinashares a border
Score 64.27
Closest healthier
29910
South Carolinashares a border
Score 62.87
Similar health profile
75603
Texas98% similar profile
Score 43.14
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 | 28.6% | 25.5–31.7 |
| High blood pressure among adults | 40.1% | 36.1–44.1 |
| Cancer (non-skin) or melanoma among adults | 7.6% | 6.9–8.4 |
| Current asthma among adults | 9.9% | 8.8–11.1 |
| Coronary heart disease among adults | 7.3% | 6.6–8.1 |
| Chronic obstructive pulmonary disease among adults | 8.4% | 7.4–9.4 |
| Depression among adults | 21.5% | 18.3–24.8 |
| Diagnosed diabetes among adults | 16.5% | 14.4–18.6 |
| High cholesterol among adults who have ever been screened | 39.3% | 35.3–43.4 |
| Obesity among adults | 36.1% | 29.3–43.2 |
| Stroke among adults | 4.5% | 4.2–4.9 |
| All teeth lost among adults aged >=65 years | 18.5% | 15.4–22.0 |
PreventionCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Current lack of health insurance among adults aged 18-64 years | 17.4% | 15.2–19.9 |
| Taking medicine to control high blood pressure among adults with high blood pressure | 80.3% | 77.9–82.6 |
| Visits to doctor for routine checkup within the past year among adults | 80.3% | 77.0–83.3 |
| Cholesterol screening among adults | 85.9% | 84.1–87.6 |
| Colorectal cancer screening among adults aged 45–75 years | 67.4% | 62.4–72.1 |
| Visited dentist or dental clinic in the past year among adults | 56.8% | 53.1–60.5 |
| Mammography use among women aged 50-74 years | 74.4% | 66.5–81.3 |
Health Risk BehaviorsCDC PLACES 2022 / 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Binge drinking among adults | 14.7% | 12.1–17.6 |
| Current cigarette smoking among adults | 14.6% | 12.6–16.8 |
| No leisure-time physical activity among adults | 31.0% | 26.6–35.7 |
| Short sleep duration among adults | 36.3% | 29.9–43.0 |
Health StatusCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Fair or poor self-rated health status among adults | 24.8% | 21.9–27.8 |
| Frequent mental distress among adults | 16.9% | 15.0–18.9 |
| Frequent physical distress among adults | 15.7% | 13.9–17.6 |
DisabilityCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Cognitive disability among adults | 16.1% | 14.3–17.9 |
| Any disability among adults | 35.3% | 31.1–39.7 |
| Hearing disability among adults | 7.2% | 6.4–8.1 |
| Independent living disability among adults | 10.2% | 9.1–11.3 |
| Mobility disability among adults | 18.0% | 15.8–20.2 |
| Self-care disability among adults | 5.6% | 5.1–6.2 |
| Vision disability among adults | 7.6% | 6.9–8.3 |
Health-Related Social NeedsCDC PLACES 2023 · BRFSS
| Measure | Crude prevalence | 95% CI |
|---|---|---|
| Lack of social and emotional support among adults | 25.0% | 21.5–28.7 |
| Food insecurity in the past 12 months among adults | 24.7% | 21.6–27.9 |
| Received food stamps in the past 12 months among adults | 15.7% | 13.7–18.0 |
| Housing insecurity in the past 12 months among adults | 18.1% | 15.7–20.5 |
| Lack of reliable transportation in the past 12 months among adults | 11.5% | 10.2–13.0 |
| Loneliness among adults | 32.2% | 27.5–37.2 |
| Utility services shut-off threat in the past 12 months among adults | 12.1% | 10.6–13.7 |
Community & economyCensus ACS 5-Year · 2024 release · observed
| Measure | Value | US median (p10–p90) | SC median (p10–p90) |
|---|---|---|---|
| Poverty rate | 17.1% | 10.6% (3.1–25.8%) n=32,364 | 15.5% (6.2–28.7%) n=410 |
| Uninsured 18–64 | 28.2% | 9.0% (1.5–24.3%) n=32,286 | 14.1% (5.9–25.5%) n=412 |
| No HS diploma (25+) | 9.5% | 7.9% (1.8–20.7%) n=32,505 | 11.6% (3.4–21.1%) n=417 |
| Bachelor's or higher (25+) | 30.7% | 23.3% (9.2–53.6%) n=32,505 | 20.1% (9.1–48.9%) n=417 |
| Unemployment rate (16+) | 2.3% | 3.9% (0.0–9.8%) n=32,274 | 4.6% (0.2–11.1%) n=414 |
| Households without a vehicle | 7.4% | 3.9% (0.0–12.5%) n=32,322 | 4.8% (0.0–13.6%) n=410 |
| Broadband subscription | 87.7% | 89.3% (75.1–97.1%) n=32,322 | 86.1% (71.4–95.1%) n=410 |
| Housing cost burden (≥30% income) | 27.1% | 23.7% (10.6–40.0%) n=32,322 | 23.3% (12.8–35.0%) n=410 |
| Homeownership rate | 75.6% | 78.7% (51.7–94.0%) n=32,322 | 77.3% (54.9–91.8%) n=410 |
| Crowded housing (>1 per room) | 3.0% | 1.3% (0.0–6.3%) n=32,322 | 1.4% (0.0–4.6%) n=410 |
| Foreign-born population | 16.0% | 2.6% (0.0–18.6%) n=32,553 | 2.7% (0.0–9.0%) n=419 |
| Single-parent households | 67.4% | 53.6% (37.3–74.1%) n=32,087 | 50.9% (37.6–69.9%) n=404 |
| Population 65+ | 21.1% | 19.4% (10.8–33.6%) n=32,553 | 19.6% (10.9–31.7%) n=419 |
| Median age | 49.2 yr | 42.2 yr (33.0–56.3) n=32,292 | 41.4 yr (33.8–54.1) n=415 |
| Median household income | $72,821 | $72,070 ($46,039–$118,707) n=30,318 | $58,990 ($40,800–$90,964) n=384 |
| Median home value | $428,700 | $222,200 ($100,300–$579,820) n=30,049 | $177,400 ($88,260–$384,940) n=383 |
| Median gross rent | $1,398 | $1,021 ($677–$1,912) n=25,670 | $950 ($678–$1,545) n=343 |
Life expectancyNCHS / RWJF USALEEP · model-based
| Measure | Value | US median (p10–p90) | SC median (p10–p90) |
|---|---|---|---|
| Life expectancy at birth | 77.9 yr ± 1.26 | 78.9 yr (74.7–82.8) n=31,308 | 76.3 yr (73.2–79.9) n=389 |
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 1.26 years of 77.9, 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