Duncan, OK Population

Overview

22,664

Total Population

38.7

Median age

51.89%

Female population %

92.7:100

Gender ratio (M:F)

65-69 years

Largest age group

63.0

Total dependency ratio

White

Largest racial group

2,526

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Duncan is 38.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Duncan's population under 18 was 23.87%, compared to the 22.51% nationwide.
Duncan's elderly or the senior population (over 65 age) was 18.69% as compared to 16.04% nationwide.
Of the total population in Duncan, 19.98% were under the age of 15, 18.53% aged 15 to 29, 42.81% aged 30 to 64, 15.95% aged 65 to 84, and 2.73% were 85 years of age and older.

There are 856 more females than males in Duncan:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.89% females and 48.11% males in Duncan, OK.
The Duncan, OK gender ratio is 92.7:100 i.e. 92.7 men to 100 women (0.927).
For male population, the largest age group is 0-4 years with a population of 814.
For the female population, the largest age group is 65-69 years with a population of 1,032.

Duncan's population has become increasingly diverse:

Racial distribution of Duncan population: 77.85% are White, 2.84% are Black or African American, 4.35% are American Indian and Alaska Native, 0.70% are Asian, 0.21% are Native Hawaiian and other Pacific Islander, 5.58% are some other race and 8.47% are multiracial.
Duncan's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 2,526 is Hispanic or Latino (of any race), and 20,138 (88.85% of the total population) is Non-Hispanic.
The largest racial group in Duncan is White with a population of 17,645 (77.85% of the total population).

Duncan's population has already reached its peak and is showing a trend of decline:

The peak population was 23,438 in the year 2010
From 2000 to 2010, Duncan's population increased by 842 (3.73%), as compared to the national growth of 9.63%.
From 2010 to 2020, Duncan's population decreased by 787 (3.36%), 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 2003 at 22,126.