Clay County, SD Population

Overview

14,816

Total Population

24.7

Median age

50.71%

Female population %

97.2:100

Gender ratio (M:F)

20-24 years

Largest age group

37.6

Total dependency ratio

White

Largest racial group

475

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Clay County is 24.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Clay County's population under 18 was 18.62%, compared to the 22.51% nationwide.
Clay County's elderly or the senior population (over 65 age) was 11.67% as compared to 16.04% nationwide.
Of the total population in Clay County, 15.67% were under the age of 15, 41.96% aged 15 to 29, 30.70% aged 30 to 64, 9.89% aged 65 to 84, and 1.78% were 85 years of age and older.

There are 210 more females than males in Clay County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.71% females and 49.29% males in Clay County, SD.
The Clay County, SD gender ratio is 97.2:100 i.e. 97.2 men to 100 women (0.972).
For male population, the largest age group is 15-19 years with a population of 1,311.
For the female population, the largest age group is 20-24 years with a population of 1,646.

Clay County's population has become increasingly diverse:

Racial distribution of Clay County population: 86.51% are White, 1.85% are Black or African American, 3.19% are American Indian and Alaska Native, 2.94% are Asian, 0.07% are Native Hawaiian and other Pacific Islander, 1.41% are some other race and 4.03% are multiracial.
Clay County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 475 is Hispanic or Latino (of any race), and 14,341 (96.79% of the total population) is Non-Hispanic.
The largest racial group in Clay County is White with a population of 12,817 (86.51% of the total population).

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

The peak population was 15,280 in the year 2022
From 2000 to 2010, Clay County's population increased by 338 (2.51%), as compared to the national growth of 9.63%.
From 2010 to 2020, Clay County's population increased by 1,166 (8.43%), 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, Clay County's population was lowest in year 2004 at 13,295.