The total population of Brooklyn is estimated to be 629 with 260 males (41.34%) and 369 females (58.66%). There are 109 more females than males in Brooklyn.
In 2022, the population of Brooklyn was 635, a 1.24% decrease year-by-year from 2021. Previously, in 2021, Brooklyn's population was 643, a decline of 1.08% compared to a population of 650 in 2020.
The median age in Brooklyn, IL is 29.7, as per 2021 ACS 5-Year Estimates. Of the total population, 30.62% were under the age of 15, 22.81% aged 15 to 29, 30.14% aged 30 to 64, 14.83% aged 65 to 84, and 1.59% were 85 years of age and older.