Mason Flag

Mason

County Seat:
No
Area (mi²):
37.145
State:
Illinois

Mason is located in Effingham County, Illinois. Mason has a 2025 population of 1,237. Mason is currently declining at a rate of -0.24% annually and its population has decreased by -2.44% since the most recent census, which recorded a population of 1,268 in 2020.

The average household income in Mason is $78,302 with a poverty rate of 13.96%.The median age in Mason is 47.4 years: 47.5 years for males, and 47.3 years for females.

1.2K
Total Population
33
Density (mi²)
-3 -0.24%
Growth

Mason Population

Demographics

Economics and Income Statistics

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)