Mason
Mason has lower-than-average household income, with a median household income of $65,455. Population has grown 18% since 2000. 5% of adults hold a bachelor's degree or higher, below the national rate of 36%. Median home value has more than doubled since 2000, reaching $82,900. At a median age of 29.8, residents skew younger than the country as a whole.
Population & growth
PEP 2025 EST:321 residents (Census Bureau Vintage 2025, released March 2026)
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Race & ethnicity
Education
Commute & transportation
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People & community
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How many people live in Mason, Illinois?
Mason, Illinois has about 467 residents according to the 2024 American Community Survey.
What is the median household income in Mason, Illinois?
The typical household in Mason, Illinois earns about $65,455 a year. Half of households make more than that, and half make less.
Is Mason, Illinois expensive?
In Mason, Illinois, the median home is worth about $82,900, and the typical rent is about $911 a month.
How educated are people in Mason, Illinois?
About 5.0% of adults age 25 and over in Mason, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Mason, Illinois?
About 35.5% of people in Mason, Illinois live below the federal poverty line.
Has Mason, Illinois grown since 1990?
Yes, Mason, Illinois has grown since 1990. The population has added about 87 residents, a change of about 23 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024