Johns Island, SC 29455 ZIP Code Profile


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ZIP Code 29455: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Johns Island, SC 29455

Acceptable Alternative
Kiawah Island, SC 29455
Seabrook Isl, SC 29455
Seabrook Island, SC 29455

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 501
  • Single Family Addresses: 11,846
  • Multi-Family Addresses: 798
  • County: Charleston County
  • Centroid: Latitude 32.691, Longitude -80.091
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

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29455 ZIP Code Map

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Johns Island, SC 29455 Data & Demographics (As of July 1, 2017)


Total Population 23,974
Daytime Population: Workers 9,030
Daytime Population: Residents 12,215
Total Daytime Population (TDP) 21,245
Ratio TDP/Total Population1 0.89
Population in Households 23,846
Population in Familes 18,932
Population in Group Qrtrs 128
Population Density2 232
Diversity Index3 58


Median Household Income $63,796
Average Household Income $101,070
Per Capita Income $42,054


Total Housing Units 15,010 (100%)
Owner Occupied HU 7,634 (50.9%)
Renter Occupied HU 2,308 (15.4%)
Vacant Housing Units 5,068 (33.8%)
Median Home Value $324,618
Average Home Value $482,103


Total Households 9,942
Average Household Size 2.4
Family Households 6,643
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 2.89% 2.65%
Households 2.9% 2.65%
Families 2.63% 2.47%
Median Household Income   3.28%
Per Capita Income   2.17%

Johns Island, SC 29455 - Peer Comparisons by Rank and Percentile

The table below compares 29455 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 # 77 81st
Population Density # 128 68th
Diversity Index # 58 86th
Median Household Income # 34 92nd
Per Capita Income # 14 97th

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

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