Keystone, SD Population

Overview

469

Total Population

36.8

Median age

45.63%

Female population %

119.2:100

Gender ratio (M:F)

35-39 years

Largest age group

53.8

Total dependency ratio

White

Largest racial group

104

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Keystone is 36.8, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Keystone's population under 18 was 29.42%, compared to the 22.51% nationwide.
Keystone's elderly or the senior population (over 65 age) was 11.30% as compared to 16.04% nationwide.
Of the total population in Keystone, 23.67% were under the age of 15, 20.04% aged 15 to 29, 44.99% aged 30 to 64, 10.66% aged 65 to 84, and 0.64% were 85 years of age and older.

There are 41 less females than males in Keystone:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 45.63% females and 54.37% males in Keystone, SD.
The Keystone, SD gender ratio is 119.2:100 i.e. 119.2 men to 100 women (1.192).
For male population, the largest age group is 35-39 years with a population of 41.
For the female population, the largest age group is 5-9 years with a population of 38.

Keystone's population has become increasingly diverse:

Racial distribution of Keystone population: 88.27% are White, 1.71% are American Indian and Alaska Native, 1.49% are Asian, 0.85% are some other race and 7.68% are multiracial.
Keystone's racial breakdown clearly shows that there is an absolute majority of White population in the town.
By ethnicity, 104 is Hispanic or Latino (of any race), and 365 (77.83% of the total population) is Non-Hispanic.
The largest racial group in Keystone is White with a population of 414 (88.27% of the total population).

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

The peak population was 345 in the year 2019
From 2000 to 2010, Keystone's population increased by 23 (7.40%), as compared to the national growth of 9.63%.
From 2010 to 2020, Keystone's population decreased by 92 (27.54%), 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, Keystone's population was lowest in year 2020 at 242.