According to the most recent Charleston County South Carolina demographics data available from the 2022 Census Bureau released in the American Community Survey in November of 2022, Figure 1 Charleston County depicts it has a Population 2021 of 404,946 which is the most of all counties in the greater Charleston County region. Figure 3 uses the Charleston County population data for a comparison of the population growth/population change estimates from the years 2010 to 2021 and Charleston County South Carolina depicts an increase of 54,737 (16%).
The total Charleston County South Carolina greater area population percent change for all areas for the years from 2010 to 2021 is shown in Figure 4 and for Charleston County depicts it has a Population Change of 15.6% which is the third most population percent change of all other counties in the greater Charleston County region.
Looking at the Charleston County population density (measured as people per square mile) and providing comparisons to both the national and state average population density in Figure 5, Charleston County South Carolina indicates it has 442 people per square mile which is ranked #1 of all counties in the greater Charleston County region. The next lower population density is Beaufort County approximately three-fourths the size with population density of 323. Figure 6 provides Charleston County demographics for the overall median age for all people in the region and Charleston County shows it has a Median Age of 38.4 which is less than most other counties in the local area. The county with the highest overall median age of all people in the area is Georgetown County which indicates an age of 50.4 (31.2% larger).
The next demographic analysis (Figure 7) looks at large generational Charleston County population groups (and can be useful internet research for employment related research or identifying areas with retirees). Key findings in this chart includes that Charleston County South Carolina has the largest proportion of people less than 20 years of age at 14.2% of the total and is ranked #1. Second, it has the largest proportion of people between 20 and 29 years old at 15.7% of the total and is ranked #1. Figure 9 shows the Charleston County South Carolina Hispanic (including non Hispanic whites) population household ethnicity in the region and Charleston County shows it has a Hispanic or Latino of 5.3% which is in the mid range of other counties in the metro area.
Charleston County Families and Marital Status Charts
Figure 11 compares the average household size using the average number of people in a family for Charleston County households. Charleston County shows it has a Family Size of 3.1 which is less than most other counties in the metro area. The county with the highest average family size in the area is Dorchester County which depicts an average family size of 3.3 (8.0% larger).
Looking at Charleston County households that are headed by a husband and wife as a percent of all families in Figure 12, Charleston County depicts it has a Married-couple family of 75% which is the third most husband and wife family percent of all other counties in the greater Charleston County region. The county with the highest percent of people in a husband and wife family in the area is Beaufort County which shows a husband and wife family percent of 82% (10.1% larger).
The next section of charts provide a detailed look at mothers and baby births that occurred over the past 12 months. Figure 13 shows the rate of women aged 15 to 50 years old who have given birth. Charleston County depicts it has a Birth Rate of 5.5% which is less than most other counties in the greater region. The county with the highest percent of women who gave birth in the area is Berkeley County which depicts a birth rate of 6.9% (25.6% larger). Figure 14 shows the breakdown of the mother's age for all baby births that occurred in the last 12 months and has the smallest proportion of percent of births to mothers aged 15 to 19 at 9% of the total. Second, it has the largest proportion of percent of births to mothers aged 25 to 29 at 38% of the total and is ranked #1.
The next set of demographic data looks at the marital status for Charleston County households which is useful for internet research. Figure 16 compares the total number of single people in each area. Charleston County depicts it has a Total Single People of 52% which is the third most percent single people of all other counties in the greater Charleston County region. The county with the highest percent of people who are single for any reason in the area is Williamsburg County which indicates a percent single of 58% (11.1% larger). Comparing percent of people who are single for any reason to the United States average of 50%, Charleston County is only about 3.9% larger. Also, benchmarked against the state of South Carolina, percent of people who are single for any reason of 50%, Charleston County is only about 5.0% larger.
Charleston County Citizenship Demographics Charts
The next diagram (Figure 18) shows the year of entry that non citizens entered the United States. The year of entry can show the rate of flow at various points of time in the past for when they entered the U.S. it has one of the largest proportions of non citizens who entered the US after 2010 at 54% of the total and is ranked #2. The only larger county being Colleton County with 64%. Second, it has the second smallest when sorted by percent of non citizens who entered the US after 2010 of all the other counties in the greater region in terms of non citizens who entered the US between 1990 to 1999 at 8% of the total.
Charleston County Birthplace Demographic Charts
Figure 19 looks at the detailed country of origin demographic research for foreign-born people in this place. Click column to sort.
For comparison purposes, Figure 20 shows detailed statistic data for the entire United States. In particular, this diagram breaks down the detailed country of origin foreign-born people in the entire U.S. in order to compare with the data provided in the prior diagram which shows only for the local area. Both this diagram and the prior diagram are sorted the same way to facilitate comparison between the two. Click column to sort.
Charleston County, South Carolina Demographics Data
Cities marked with an asterisk ("*") should resemble a city or town but do not have their own government (i.e. Mayor, City Council, etc.) These places should be recognizable by the local community but their boundaries have no legal status. Technically these include both Census Designated Places (CDP) and Census County Divisions (CCD) which are defined by the Census Bureau along with local authorities. (For more information, see:
Census Designated Place or "CDP")
and Census County Division "CCD".)
For comparison purposes, the US national average and the state average value are provided. Additionally, the "Combined Statistical Area" or CSA is shown that is closest to the city, county, or zip code shown. A CSA is a large grouping of adjacent metropolitan areas that identified by the Census Bureau based on social and economic ties. (See: Combined Statistical Area)
Data sources - Mouse over icon in upper right corner of each chart for information.