Saint Helena Island, SC 29920 ZIP Code Profile

Related Place Profiles:
Dataw Island, SC | Frogmore, SC

ZIP Code 29920: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Saint Helena Island, SC 29920

Acceptable Alternative
Fripp Island, SC 29920
St Helena Is, SC 29920

Not Acceptable, USPS
Dataw Island, SC 29920
Frogmore, SC 29920
Harbor Isl, SC 29920

  • ZIP Code Type: STANDARD
  • County: Beaufort County
  • Centroid: Latitude 32.37, Longitude -80.55
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 216
  • PO Box Addresses: 830
  • Residential Addresses: 4,952
    • Multi-Family Addresses: 86
    • Single Family Addresses: 4,866

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


29920 ZIP Code Map

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Saint Helena Island, SC 29920 Data & Demographics (As of July 1, 2017)


Total Population 10,792
Daytime Population: Workers 1,844
Daytime Population: Residents 7,071
Total Daytime Population (TDP) 8,915
Ratio TDP/Total Population1 0.83
Population in Households 10,771
Population in Familes 8,855
Population in Group Qrtrs 21
Population Density2 107
Diversity Index3 57


Median Household Income $43,680
Average Household Income $64,879
Per Capita Income $27,314


Total Housing Units 7,801 (100%)
Owner Occupied HU 3,756 (48.1%)
Renter Occupied HU 779 ( 10.0%)
Vacant Housing Units 3,266 (41.9%)
Median Home Value $216,532
Average Home Value $308,187


Total Households 4,535
Average Household Size 2.38
Family Households 3,077
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.8% 1.87%
Households 1.71% 1.91%
Families 1.49% 1.78%
Median Household Income   2.88%
Per Capita Income   2.23%

Saint Helena Island, SC 29920 - Peer Comparisons by Rank and Percentile

The table below compares 29920 to the other 395 ZIP Codes in South Carolina by rank and percentile using July 1, 2017 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.

Variable Description Rank Percentile
Total Population # 160 60th
Population Density # 180 55th
Diversity Index # 69 83rd
Median Household Income # 157 61st
Per Capita Income # 83 79th

Additional comparisons and rankings can be made with a VERY EASY TO USE South Carolina Census Data Comparison Tool.

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