southcarolina-demographics.com

Duncan Demographics | Current South Carolina Census Data

population icon 2025 Projected Population

The 2025 projected population for Duncan is 4,729. This projection assumes an annual rate of change of 3.4%, consistent with the population change from 2022 to 2023 according to the US Census Bureau's 2023 Population Estimates Program.

population icon 2023 Population

With 4,431 people, Duncan is the 109th most populated city in the state of South Carolina out of 475 cities according to the most current US Census data. But watch out, Duncan, because Isle of Palms with 4,370 people and Baxter Village with 4,355 people are right behind you.

race icon Race & Ethnicity

The largest Duncan racial/ethnic groups are White (49.6%) followed by Black (40.6%) and Hispanic (7.8%).

income icon Median Income

In 2023, the median household income of Duncan households was $51,596. Duncan households made slightly more than Arkwright households ($51,458) and Spartanburg households ($51,193) . However, 8.0% of Duncan families live in poverty.

age icon Median Age

The median age for Duncan residents is 30.9 years young.