Waterloo, IL Population

Overview

10,906

Total Population

40.4

Median age

51.19%

Female population %

95.3:100

Gender ratio (M:F)

35-39 years

Largest age group

68.9

Total dependency ratio

White

Largest racial group

165

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Waterloo is 40.4, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Waterloo's population under 18 was 22.14%, compared to the 22.51% nationwide.
Waterloo's elderly or the senior population (over 65 age) was 20.41% as compared to 16.04% nationwide.
Of the total population in Waterloo, 20.38% were under the age of 15, 15.18% aged 15 to 29, 44.03% aged 30 to 64, 16.68% aged 65 to 84, and 3.73% were 85 years of age and older.

There are 260 more females than males in Waterloo:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.19% females and 48.81% males in Waterloo, IL.
The Waterloo, IL gender ratio is 95.3:100 i.e. 95.3 men to 100 women (0.953).
For male population, the largest age group is 40-44 years with a population of 479.
For the female population, the largest age group is 10-14 years with a population of 511.

Waterloo's population has become increasingly diverse:

Racial distribution of Waterloo population: 96.12% are White, 0.47% are Black or African American, 0.47% are American Indian and Alaska Native, 1.56% are Asian, 0.17% are some other race and 1.22% are multiracial.
Waterloo's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 165 is Hispanic or Latino (of any race), and 10,741 (98.49% of the total population) is Non-Hispanic.
The largest racial group in Waterloo is White with a population of 10,483 (96.12% of the total population).

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

The peak population was 11,130 in the year 2022
From 2000 to 2010, Waterloo's population increased by 1,821 (22.35%), as compared to the national growth of 9.63%.
From 2010 to 2020, Waterloo's population increased by 1,035 (10.38%), 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, Waterloo's population was lowest in year 2000 at 8,149.