Riley County, KS Population

Overview

72,602

Total Population

25.5

Median age

47.63%

Female population %

11:100

Gender ratio (M:F)

20-24 years

Largest age group

30.7

Total dependency ratio

White

Largest racial group

6,125

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Riley County is 25.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Riley County's population under 18 was 16.53%, compared to the 22.51% nationwide.
Riley County's elderly or the senior population (over 65 age) was 9.42% as compared to 16.04% nationwide.
Of the total population in Riley County, 14.09% were under the age of 15, 44.30% aged 15 to 29, 32.19% aged 30 to 64, 8.06% aged 65 to 84, and 1.36% were 85 years of age and older.

There are 3,448 less females than males in Riley County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.63% females and 52.37% males in Riley County, KS.
The Riley County, KS gender ratio is 11:100 i.e. 11 men to 100 women (1.100).
For male population, the largest age group is 20-24 years with a population of 10,199.
For the female population, the largest age group is 20-24 years with a population of 7,508.

Riley County's population has become increasingly diverse:

Racial distribution of Riley County population: 80.99% are White, 6.21% are Black or African American, 0.83% are American Indian and Alaska Native, 4.70% are Asian, 0.19% are Native Hawaiian and other Pacific Islander, 1.38% are some other race and 5.70% are multiracial.
Riley County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 6,125 is Hispanic or Latino (of any race), and 66,477 (91.56% of the total population) is Non-Hispanic.
The largest racial group in Riley County is White with a population of 58,797 (80.99% of the total population).

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

The peak population was 77,545 in the year 2012
From 2000 to 2010, Riley County's population increased by 8,396 (13.29%), as compared to the national growth of 9.63%.
From 2010 to 2020, Riley County's population increased by 456 (0.64%), 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, Riley County's population was lowest in year 2002 at 61,957.