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The total population of Williamson County is estimated to be 67,120 with 33,757 males (50.29%) and 33,363 females (49.71%). There are 394 less females than males in Williamson County.
The median household income in Williamson County was $59,106 in 2021, which marked an an increase of 97(0.16%) from $59,009 in 2020. This income is 79.22% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Williamson County sees its highest median household income among householders in the age group of 25 to 44 years old, at $77,474. Overall, the median household income for the county of Williamson County stands at $67,631.
In Williamson County, the median income for all workers aged 15 years and older, regardless of work hours, was $43,572 for males and $32,485 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $54,730 for males and $47,649 for females.
In Williamson County, the demographic landscape is diverse, spanning 5 distinct racial categories among households. Among these, Asian households have the highest median household income at $165,178, while White households represent the opposite end with the lowest median household income of $63,892.
In 2022, the population of Williamson County was 66,695, a 0.37% decrease year-by-year from 2021. Previously, in 2021, Williamson County's population was 66,943, a decline of 0.25% compared to a population of 67,113 in 2020.
The median age in Williamson County, IL is 41.1, as per 2021 ACS 5-Year Estimates. Of the total population, 18.37% were under the age of 15, 16.59% aged 15 to 29, 46.20% aged 30 to 64, 16.77% aged 65 to 84, and 2.07% were 85 years of age and older.
Racial distribution of Williamson County population: 90.09% are White, 4.04% are Black or African American, 0.22% are American Indian and Alaska Native, 1.32% are Asian, 1% are some other race and 3.32% are multiracial.