Flannigan township Flag

Flannigan township

County:
Hamilton County
County Seat:
No
Area (mi²):
36.195
State:
Illinois

Flannigan township is located in Hamilton County, Illinois. Flannigan township has a 2026 population of 303. Flannigan township is currently declining at a rate of -0.66% annually and its population has decreased by -3.19% since the most recent census, which recorded a population of 313 in 2020.

The median age in Flannigan township is 37.9 years: 53.1 years for males, and 35.2 years for females. For every 100 females there are 135.4 males.

303
Total Population
8.4
Density (mi²)
-2 -0.66%
Growth

Flannigan township Population

Flannigan township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026303-2-0.66%
2025305-2-0.65%
2024307-2-0.65%
2023309-3-0.96%
202231220.65%
2021310-3-0.96%
202031300%
201929100%
2018291-2-0.68%
2017293-2-0.68%
2016295-2-0.67%
2015297-3-1%
2014300-1-0.33%
2013301-1-0.33%
2012302-2-0.66%
201130400%
2010304-1-0.33%

Median Age

Overall: 37.9 years
Female: 35.2 years
Male: 53.1 years

Flannigan township Adults

There are 184 adults, (58 of whom are seniors) in Flannigan township.

Sex Ratio

Female: 113 (42.5%)
Male: 153 (57.5%)

Demographics

The racial composition of Flannigan township includes 96.24% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White25696.24%
Two or more races103.76%
Race
Population ↓
Percentage (of total)
White25696.24%
Two or more races103.76%

Flannigan township Marital Status

Nearby Cities

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)