Mason County, Illinois
White alone, percent 96.3%
People
Population
Population estimates, July 1, 2025, (V2025) 12,411
Population estimates, July 1, 2024, (V2024) 12,543
Population estimates base, April 1, 2020, (V2025) 13,082
Population estimates base, April 1, 2020, (V2024) 13,086
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) -5.1%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) -4.1%
Population, Census, April 1, 2020 13,086
Population, Census, April 1, 2010 14,666
Age and Sex
Persons under 5 years, percent 4.9%
Persons under 18 years, percent 20.3%
Persons 65 years and over, percent 23.5%
Female persons, percent 50.4%
Race and Hispanic Origin
White alone, percent 96.3%
Black alone, percent(a) 0.9%
American Indian and Alaska Native alone, percent(a) 0.5%
Asian alone, percent(a) 0.8%
Native Hawaiian and Other Pacific Islander alone, percent(a) Z
Two or More Races, percent 1.5%
Hispanic or Latino, percent(b) 2.0%
White alone, not Hispanic or Latino, percent 94.7%
Population Characteristics
Veterans, 2020-2024 835
Foreign-born persons, percent, 2020-2024 0.9%
Housing
Housing Units, July 1, 2025, (V2025) 6,612
Owner-occupied housing unit rate, 2020-2024 81.8%
Median value of owner-occupied housing units, 2020-2024 $103,400
Median selected monthly owner costs - with a mortgage, 2020-2024 $1,140
Median selected monthly owner costs - without a mortage, 2020-2024 $553
Median gross rent, 2020-2024 $802
Building Permits, 2025 6
Families & Living Arrangements
Households, 2020-2024 5,781
Persons per household, 2020-2024 2.17
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 92.6%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 2.2%
Computer and Internet Use
Households with a computer, percent, 2020-2024 91.6%
Households with a broadband Internet subscription, percent, 2020-2024 87.0%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 93.0%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 17.1%
Health
With a disability, under age 65 years, percent, 2020-2024 13.6%
Persons without health insurance, under age 65 years, percent 6.3%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 54.3%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 49.7%
Total accommodation and food services sales, 2022 ($1,000)(c) 11,009
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 49,329
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 38,634
Total retail sales, 2022 ($1,000)(c) 128,465
Total retail sales per capita, 2022(c) $10,116
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 30.4
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $62,845
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $34,815
Persons in poverty, percent 13.5%
Businesses
Businesses
Total employer establishments, 2023 255
Total employment, 2023 1,974
Total annual payroll, 2023 ($1,000) 88,913
Total employment, percent change, 2022-2023 -5.2%
Total nonemployer establishments, 2023 617
All employer firms, Reference year 2023 270
Male-owned employer firms, Reference year 2023 S
Female-owned employer firms, Reference year 2023 S
Minority-owned employer firms, Reference year 2023 S
Nonminority-owned employer firms, Reference year 2023 S
Veteran-owned employer firms, Reference year 2023 S
Nonveteran-owned employer firms, Reference year 2023 S
Geography
Geography
Population per square mile, 2020 24.3
Population per square mile, 2010 27.2
Land area in square miles, 2020 539.35
Land area in square miles, 2010 539.24
FIPS Code 17125