Duncan, SC Population

Overview

3,937

Total Population

30.5

Median age

54.05%

Female population %

85:100

Gender ratio (M:F)

25-29 years

Largest age group

52.5

Total dependency ratio

White

Largest racial group

388

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Duncan's population is young compared to the rest of the country:

The median age in Duncan is 30.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Duncan's population under 18 was 25.88%, compared to the 22.51% nationwide.
Duncan's elderly or the senior population (over 65 age) was 10.13% as compared to 16.04% nationwide.
Of the total population in Duncan, 24.28% were under the age of 15, 22.78% aged 15 to 29, 42.80% aged 30 to 64, 7.32% aged 65 to 84, and 2.82% were 85 years of age and older.

There are 319 more females than males in Duncan:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 54.05% females and 45.95% males in Duncan, SC.
The Duncan, SC gender ratio is 85:100 i.e. 85 men to 100 women (0.850).
For male population, the largest age group is 25-29 years with a population of 369.
For the female population, the largest age group is 25-29 years with a population of 317.

Duncan's population is moderately diverse:

Racial distribution of Duncan population: 61.09% are White, 33.30% are Black or African American, 0.53% are some other race and 5.08% are multiracial.
Duncan's racial breakdown clearly shows that there is an absolute majority of White population in the town.
By ethnicity, 388 is Hispanic or Latino (of any race), and 3,549 (90.14% of the total population) is Non-Hispanic.
The largest racial group in Duncan is White with a population of 2,405 (61.09% of the total population).

Duncan's population has not reached its peak yet and is showing a trend of further growth:

The peak population was 4,276 in the year 2022
From 2000 to 2010, Duncan's population increased by 492 (18.22%), as compared to the national growth of 9.63%.
From 2010 to 2020, Duncan's population increased by 862 (27.01%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Duncan's population was lowest in year 2000 at 2,700.