Mason Flag

Mason

County Seat:
No
Area (mi²):
1.287
State:
Illinois

Mason is a town located in Effingham County, Illinois. Mason has a 2025 population of 315. Mason is currently declining at a rate of -0.63% annually and its population has decreased by -3.08% since the most recent census, which recorded a population of 325 in 2020.

The average household income in Mason is $64,997 with a poverty rate of 24.11%.The median age in Mason is 36.9 years: 38.5 years for males, and 36.3 years for females.

315
Total Population
245
Density (mi²)
-2 -0.63%
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)