The ZIP Code maps and database are updated 4 times per year. Database updated: March 1, 2026, Maps updated: May 1, 2024.
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Saint Helena Island, SC 29920 Data & Demographics
Source: 2020-2024 American Community Survey 5-Year Estimates
POPULATION
Total Population
10,606 (100%)
Population Density
109 per sq mi
Diversity Index1
57
INCOME
Median Household Income
$77,744
Per Capita Income
$43,913
Median Home Value
$288,700
HOUSING
Total HU (Housing Units)
7,163 (100%)
Owner Occupied HU
4,051 (56.6%)
Renter Occupied HU
435 (6.1%)
Vacant Housing Units
2,677 (37.4%)
HOUSEHOLDS
Total Households
4,486
Average Household Size
2.33
Family Households
2,954 (65.8%)
NOTES
The Diversity Index estimates the likelihood that two persons chosen at random from the same area belong to different race or ethnic groups, based on five groups: Hispanic/Latino, Non-Hispanic White, Non-Hispanic Black, Non-Hispanic Asian, and Non-Hispanic Other/Multiracial. A value of 0 indicates the population belongs entirely to one group. Higher values indicate a more evenly mixed population. Calculated from U.S. Census Bureau ACS 5-year estimates (table B03002).
Saint Helena Island, SC 29920 - Peer Comparisons by Rank and Percentile
The table below compares 29920 to the other 33,772 ZIP Codes in the United States by rank and percentile using 2020-2024 American Community Survey 5-Year Estimates data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
