Irishtown Township, Clinton County, Illinois

Irishtown Township is one of fifteen townships in Clinton County, Illinois, United States. As of the 2020 census, its population was 1,036 and it contained 730 housing units.

Geography
According to the 2010 census, the township has a total area of 37.13 sqmi, of which 24.94 sqmi (or 67.17%) is land and 12.19 sqmi (or 32.83%) is water.

Cities, towns, villages

 * Keyesport (southwest half)

Unincorporated towns
(This list is based on USGS data and may include former settlements.)
 * Harbor Light Bay
 * Marydale
 * North Harbor
 * Panorama Hills

Cemeteries
The township contains these three cemeteries: Gillespie, Keyesport and McNeill.

Major highways

 * [[Image:Illinois 127.svg|25px]] Illinois Route 127

Airports and landing strips

 * Carrillon Airport

Landmarks

 * Eldon Hazlet State Recreation Area (north three-quarters)

Demographics
As of the 2020 census there were 1,036 people, 370 households, and 250 families residing in the township. The population density was 27.51 PD/sqmi. There were 730 housing units at an average density of 19.39 /sqmi. The racial makeup of the township was 94.11% White, 0.68% African American, 0.00% Native American, 0.29% Asian, 0.00% Pacific Islander, 0.77% from other races, and 4.15% from two or more races. Hispanic or Latino of any race were 1.06% of the population.

There were 370 households, out of which 18.90% had children under the age of 18 living with them, 54.86% were married couples living together, 7.84% had a female householder with no spouse present, and 32.43% were non-families. 30.00% of all households were made up of individuals, and 11.10% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.34.

The township's age distribution consisted of 14.0% under the age of 18, 2.9% from 18 to 24, 18.2% from 25 to 44, 31.6% from 45 to 64, and 33.3% who were 65 years of age or older. The median age was 50.6 years. For every 100 females, there were 124.8 males. For every 100 females age 18 and over, there were 117.3 males.

The median income for a household in the township was $42,011, and the median income for a family was $41,917. Males had a median income of $36,250 versus $35,179 for females. The per capita income for the township was $24,054. About 5.2% of families and 13.2% of the population were below the poverty line, including 40.0% of those under age 18 and 4.4% of those age 65 or over.

School districts

 * Carlyle Community Unit School District 1

Political districts

 * Illinois' 19th congressional district
 * State House District 107
 * State Senate District 54