Stephenson County, IL Population

Overview

44,817

Total Population

45.6

Median age

50.97%

Female population %

96.2:100

Gender ratio (M:F)

60-64 years

Largest age group

68.4

Total dependency ratio

White

Largest racial group

1,949

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Stephenson County is 45.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Stephenson County's population under 18 was 21.60%, compared to the 22.51% nationwide.
Stephenson County's elderly or the senior population (over 65 age) was 23.12% as compared to 16.04% nationwide.
Of the total population in Stephenson County, 17.49% were under the age of 15, 16.65% aged 15 to 29, 42.74% aged 30 to 64, 19.73% aged 65 to 84, and 3.39% were 85 years of age and older.

There are 867 more females than males in Stephenson County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.97% females and 49.03% males in Stephenson County, IL.
The Stephenson County, IL gender ratio is 96.2:100 i.e. 96.2 men to 100 women (0.962).
For male population, the largest age group is 55-59 years with a population of 1,699.
For the female population, the largest age group is 60-64 years with a population of 1,987.

Stephenson County's population has become increasingly diverse:

Racial distribution of Stephenson County population: 84.35% are White, 9.40% are Black or African American, 0.18% are American Indian and Alaska Native, 0.77% are Asian, 0.37% are some other race and 4.93% are multiracial.
Stephenson County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 1,949 is Hispanic or Latino (of any race), and 42,868 (95.65% of the total population) is Non-Hispanic.
The largest racial group in Stephenson County is White with a population of 37,804 (84.35% of the total population).

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

The peak population was 48,896 in the year 2000
From 2000 to 2010, Stephenson County's population decreased by 1,290 (2.64%), as compared to the national growth of 9.63%.
From 2010 to 2020, Stephenson County's population decreased by 3,113 (6.54%), 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, Stephenson County's population was lowest in year 2022 at 43,627.