ZIP 29487 vs ZIP 29455
Source:
Wadmalaw Island, SC — Johns Island, SC
This side-by-side compares ZIP 29487 (Wadmalaw Island, SC) and ZIP 29455 (Johns Island, SC) using the same Census ACS 5-Year table fields for both — no averages swapped in, no national proxies. ZIP 29487 has a population of 2,725 at 25 people per square mile, while ZIP 29455 has 20,478 at 74 per square mile. That difference in population size and density alone reshapes how every other metric should be interpreted — a higher-income ZIP with 1,200 residents behaves very differently from one with 45,000.
On income and education, ZIP 29487 reports a median household income of $105,592 against $121,372 in ZIP 29455, with per-capita income of $64,320 vs $80,015. The share of adults holding a bachelor's degree or higher is 45.8% in 29487 and 59.5% in 29455. Poverty rate reads 4.2% vs 9.0%, and unemployment 1.8% vs 1.5% — these four fields alone drive most of the difference in the scorecard grades you will see for each ZIP.
Housing separates these two ZIPs further: median home value sits at $487,900 in 29487 versus $590,800 in 29455, with median rent of $1,441 and $1,567 per month respectively. Homeownership rate is 93.6% vs 88.2%. When reading the comparison table below, focus on paired metrics rather than single winners — a ZIP with lower home values and lower income is not strictly "worse" if rent-to-income ratios and commute times land in the same zone. Every value is pulled from the exact same ACS table so the two columns are genuinely comparable.
Compare different ZIP codes:
| Metric | 29487 Wadmalaw Island, SC | 29455 Johns Island, SC |
|---|---|---|
| Population | 2,725 | 20,478 |
| Median Household Income | $105,592 | $121,372 |
| Per Capita Income | $64,320 | $80,015 |
| Median Age | 50.2 | 49.8 |
| Bachelor's Degree or Higher | 45.8% | 59.5% |
| Poverty Rate | 4.2% | 9.0% |
| Unemployment Rate | 1.8% | 1.5% |
| Median Home Value | $487,900 | $590,800 |
| Median Rent (monthly) | $1,441 | $1,567 |
| Homeownership Rate | 93.6% | 88.2% |
| Population Density (per sq mi) | 25 | 74 |
Values highlighted in green indicate the better metric where applicable. Source: U.S. Census Bureau ACS 2023.
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All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.