Illiopolis township Flag

Illiopolis township

County:
Sangamon County
County Seat:
No
Area (mi²):
33.978
State:
Illinois

Illiopolis township is located in Sangamon County, Illinois. Illiopolis township has a 2026 population of 1,208. Illiopolis township is currently growing at a rate of 0.17% annually but its population has decreased by -0.58% since the most recent census, which recorded a population of 1,215 in 2020.

The median household income in Illiopolis township is $83,000 with a poverty rate of 6.8%. The median age in Illiopolis township is 42.6 years: 41.2 years for males, and 48.7 years for females. For every 100 females there are 103.3 males.

1.2K
Total Population
36
Density (mi²)
2 0.17%
Growth

Illiopolis township 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)