Charleston County SC Information


Charleston County Subdivisions

Charleston County SC Data & Demographics (As of July 1, 2017)


Total Population 403,176
Daytime Population: Workers 269,321
Daytime Population: Residents 199,296
Total Daytime Population (TDP) 468,617
Ratio TDP/Total Population1 1.16
Population in Households 392,780
Population in Familes 290,237
Population in Group Qrtrs 10,396
Population Density2 440
Diversity Index3 56


Median Household Income $54,237
Average Household Income $79,434
Per Capita Income $33,231


Total Housing Units 193,812 (100%)
Owner Occupied HU 99,489 (51.3%)
Renter Occupied HU 67,242 (34.7%)
Vacant Housing Units 27,081 (14.0%)
Median Home Value $266,726
Average Home Value $365,933


Total Households 166,731
Average Household Size 2.36
Family Households 97,379
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 1.96% 1.87%
Households 2.01% 1.92%
Families 1.78% 1.77%
Median Household Income   2.49%
Per Capita Income   2.57%


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, 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 # 3 96th
Population Density # 3 96th
Diversity Index # 12 76th
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.