Charleston County Population

1790–2026

439.14K

2026 projection

7.1% since 2020 (increase)

0100K200K300K400K500K18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Charleston County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
2026439,143+2,9430.67%
2025436,200+2,9430.68%
2024433,257+6,8101.60%
2023426,447+6,1221.46%
2022420,325+5,6631.37%
2021414,662+4,7281.15%
2020409,934-2,6810.65%
2019412,615+5,6561.39%
2018406,959+4,2341.05%
2017402,725+5,2921.33%

Showing 10 of 38 years.

Charleston County Demographics

39.2median age

Median age

Female40.2 yrs
Male38.3 yrs

Adults

338,379
75,028 seniors (65+) · 22% of adults263,351 other adults

Sex

Female 51.5% · 216,555Male 48.5% · 203,709

Population by age

MaleFemale85+ years, male: 3,28485+ years, female: 4,72980–84 years, male: 3,47880–84 years, female: 5,39675–79 years, male: 5,53875–79 years, female: 6,70470–74 years, male: 10,12070–74 years, female: 11,84365–69 years, male: 10,88565–69 years, female: 13,05160–64 years, male: 13,41360–64 years, female: 14,80655–59 years, male: 11,61455–59 years, female: 13,61250–54 years, male: 12,20350–54 years, female: 12,62345–49 years, male: 11,90945–49 years, female: 12,03640–44 years, male: 13,78840–44 years, female: 14,26235–39 years, male: 16,41335–39 years, female: 16,38230–34 years, male: 16,66230–34 years, female: 17,45925–29 years, male: 15,24225–29 years, female: 16,14520–24 years, male: 12,64520–24 years, female: 12,37115–19 years, male: 11,53415–19 years, female: 11,52310–14 years, male: 11,83010–14 years, female: 11,5495–9 years, male: 11,0445–9 years, female: 10,5110–4 years, male: 12,1070–4 years, female: 11,55385+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45K5K10K10K15K15K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 4,203 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Charleston County Income

$88,494median household income

Median household income

$88,494

Half of households earn more, half earn less

Median earnings

$56,128

Typical yearly pay for a worker 25 or older.

Poverty rate

11.3%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Charleston County Marital Status

48% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married48%51%45%
Never married35%37%33%
Divorced11%9%12%
Widowed5%2%8%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year