Charleston County SC Information


Charleston County Subdivisions

Charleston County SC Data & Demographics (As of July 1, 2018)


Total Population 407,646
Population in Households 397,029
Population in Familes 294,941
Population in Group Qrtrs 10,617
Population Density1 445
Diversity Index2 56


Median Household Income $56,939
Average Household Income $84,536
Per Capita Income $35,239


Total Housing Units 194,975 (100%)
Owner Occupied HU 99,728 (51.1%)
Renter Occupied HU 68,341 (35.1%)
Vacant Housing Units 26,906 (13.8%)
Median Home Value $273,477
Average Home Value $402,370


Total Households 168,069
Average Household Size 2.36
Family Households 97,764
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. 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 1.86% 1.75%
Households 1.86% 1.78%
Families 1.61% 1.62%
Median Household Income   2.41%
Per Capita Income   2.31%


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, 2018 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 Density # 3 96th
Diversity Index # 15 70th
Median Household Income # 6 89th
Per Capita Income # 2 98th

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