Charleston County SC Information


Charleston County Subdivisions

Charleston County SC Data & Demographics (As of July 1, 2015)


Total Population 374,070
Population in Households 363,644
Population in Familes 268,639
Population in Group Qrtrs 10,426
Population Density1 408
Diversity Index2 54


Total Households 156,050
Average Household Size 2.33
Family Households 91,642
Average Family Size 3


Total Housing Units 184,093 (100%)
Owner Occupied HU 89,921 (48.8%)
Renter Occupied HU 66,129 (35.9%)
Vacant Housing Units 28,043 (15.2%)
Median Home Value $269,776
Average Home Value $366,202


Median Household Income $51,490
Average Household Income $73,625
Per Capita Income $30,869
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.26% 1.63%
Households 1.5% 1.74%
Families 1.29% 1.61%
Median Household Income   1.96%
Per Capita Income   2.32%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Charleston County SC - Peer Comparisons by Rank and Percentile

The table below compares Charleston County to the other 46 counties and county equivalents in South Carolina by rank and percentile using July 1, 2015 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 # 3 96th
Population Density1 # 3 96th
Diversity Index2 # 19 61st
Median Household Income # 5 91st
Per Capita Income # 2 98th

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