Pilot Grove Township is one of twenty-four townships in Hancock County, Illinois, USA. As of the 2020 census, its population was 282 and it contained 121 housing units.

According to the 2021 census gazetteer files, Pilot Grove Township has a total area of 37.05 square miles (95.96 km), of which 36.97 square miles (95.75 km) (or 99.78%) is land and 0.08 square miles (0.21 km) (or 0.22%) is water.

• Burnside at 40°30′14″N 91°06′01″W / 40.503932°N 91.100143°W / 40.503932; -91.100143

(This list is based on USGS data and may include former settlements.)

The township contains these two cemeteries: McKay and Pilot Grove.

• Illinois Route 94

• Brooks Ranch Airport
• Lung RLA Airport

• Linda Lake

As of the 2020 census there were 282 people, 64 households, and 47 families residing in the township. The population density was 7.61 inhabitants per square mile (2.94/km). There were 121 housing units at an average density of 3.27 per square mile (1.26/km). The racial makeup of the township was 94.68% White, 0.00% African American, 0.00% Native American, 0.35% Asian, 0.00% Pacific Islander, 0.00% from other races, and 4.96% from two or more races. Hispanic or Latino of any race were 2.13% of the population.

There were 64 households, out of which 34.40% had children under the age of 18 living with them, 73.44% were married couples living together, none had a female householder with no spouse present, and 26.56% were non-families. 26.60% of all households were made up of individuals, and 9.40% had someone living alone who was 65 years of age or older. The average household size was 2.95 and the average family size was 3.51.

The township's age distribution consisted of 15.9% under the age of 18, 21.7% from 18 to 24, 26.4% from 25 to 44, 26.5% from 45 to 64, and 9.5% who were 65 years of age or older. The median age was 39.5 years. For every 100 females, there were 117.2 males. For every 100 females age 18 and over, there were 101.3 males.

The median income for a household in the township was $68,000, and the median income for a family was $69,250. Males had a median income of $50,455 versus $17,679 for females. The per capita income for the township was $24,842. About 25.5% of families and 11.6% of the population were below the poverty line, including 0.0% of those under age 18 and 66.7% of those age 65 or over.

Historical population

Census	Pop.	Note	%±
1990	339		—
2000	299		−11.8%
2010	280		−6.4%
2020	282		0.7%
U.S. Decennial Census

• Nauvoo-Colusa Community Unit School District 325

• Illinois's 18th congressional district
• State House District 94
• State Senate District 47

• United States Census Bureau 2008 TIGER/Line Shapefiles
• "Pilot Grove Township". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved September 20, 2009.
• United States National Atlas

• City-Data.com
• Illinois State Archives
• Township Officials of Illinois