Lake County, IL Population

Overview

714,484

Total Population

38.5

Median age

49.77%

Female population %

100.9:100

Gender ratio (M:F)

15-19 years

Largest age group

51.2

Total dependency ratio

White

Largest racial group

159,64

Hispanic population

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

TABLE OF CONTENTS

Age

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

The median age in Lake County is 38.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Lake County's population under 18 was 24.13%, compared to the 22.51% nationwide.
Lake County's elderly or the senior population (over 65 age) was 14.40% as compared to 16.04% nationwide.
Of the total population in Lake County, 19.44% were under the age of 15, 20.46% aged 15 to 29, 45.70% aged 30 to 64, 12.62% aged 65 to 84, and 1.78% were 85 years of age and older.

There are 3,338 less females than males in Lake County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.77% females and 50.23% males in Lake County, IL.
The Lake County, IL gender ratio is 100.9:100 i.e. 100.9 men to 100 women (1.009).
For male population, the largest age group is 15-19 years with a population of 29,733.
For the female population, the largest age group is 15-19 years with a population of 26,214.

Lake County's population has become increasingly diverse:

Racial distribution of Lake County population: 69.88% are White, 6.73% are Black or African American, 0.54% are American Indian and Alaska Native, 8.23% are Asian, 0.06% are Native Hawaiian and other Pacific Islander, 7.53% are some other race and 7.03% are multiracial.
Lake County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 159,64 is Hispanic or Latino (of any race), and 554,844 (77.66% of the total population) is Non-Hispanic.
The largest racial group in Lake County is White with a population of 499,259 (69.88% of the total population).

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

The peak population was 713,251 in the year 2020
From 2000 to 2010, Lake County's population increased by 55,739 (8.60%), as compared to the national growth of 9.63%.
From 2010 to 2020, Lake County's population increased by 9,072 (1.29%), 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, Lake County's population was lowest in year 2000 at 648,440.