Ottawa, IL Population

Overview

18,719

Total Population

39.7

Median age

52.78%

Female population %

89.5:100

Gender ratio (M:F)

55-59 years

Largest age group

58.3

Total dependency ratio

White

Largest racial group

1,62

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Ottawa is 39.7, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Ottawa's population under 18 was 24.42%, compared to the 22.51% nationwide.
Ottawa's elderly or the senior population (over 65 age) was 17.26% as compared to 16.04% nationwide.
Of the total population in Ottawa, 19.58% were under the age of 15, 18.72% aged 15 to 29, 44.44% aged 30 to 64, 14.46% aged 65 to 84, and 2.80% were 85 years of age and older.

There are 1,039 more females than males in Ottawa:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 52.78% females and 47.22% males in Ottawa, IL.
The Ottawa, IL gender ratio is 89.5:100 i.e. 89.5 men to 100 women (0.895).
For male population, the largest age group is 15-19 years with a population of 709.
For the female population, the largest age group is 60-64 years with a population of 758.

Ottawa's population has become increasingly diverse:

Racial distribution of Ottawa population: 89.58% are White, 4.59% are Black or African American, 0.06% are American Indian and Alaska Native, 1.02% are Asian, 0.02% are Native Hawaiian and other Pacific Islander, 0.82% are some other race and 3.90% are multiracial.
Ottawa's racial breakdown clearly shows that there is an absolute majority of White population in the city.
By ethnicity, 1,62 is Hispanic or Latino (of any race), and 17,099 (91.35% of the total population) is Non-Hispanic.
The largest racial group in Ottawa is White with a population of 16,768 (89.58% of the total population).

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

The peak population was 19,381 in the year 2008
From 2000 to 2010, Ottawa's population increased by 332 (1.79%), as compared to the national growth of 9.63%.
From 2010 to 2020, Ottawa's population decreased by 64 (0.34%), 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, Ottawa's population was lowest in year 2019 at 18,139.