York Township, DuPage County, Illinois

According to the 2021 census gazetteer files, York Township has a total area of 35.64 square miles (92.31 km²), of which 35.05 square miles (90.78 km²) (or 98.34%) is land and 0.59 square miles (1.53 km²) (or 1.66%) is water. The township lies at an elevation of approximately 715 feet (218 m) above sea level.^[3]

• Mays' Lake (Mayslake Forest Preserve, Oak Brook)^[12]
• Trinity Lake (Oak Brook)^[13]
• Teal Lake (near Oak Brook Sports Core; along Salt Creek Greenway)^[14]
• Lake Fred (Oak Brook area; identified in DuPage County Flood Insurance Study)^[15]

York Township contains twelve cemeteries: Allerton Ridge Memorial Park, Babcock's Grove, Boeger, Brownswood, Chapel Hill Gardens West, college, Glos, Saint John's, Saint Mary's (Elmhurst), Saint Mary's (Lombard), Trinity Lutheran, and Zion Evangelical.^[16]

As of the 2020 census^[2] there were 128,425 people, 48,178 households, and 31,902 families residing in the township. The population density was 3,603.60 inhabitants per square mile (1,391.36/km²). There were 53,543 housing units at an average density of 1,502.41 per square mile (580.08/km²). The racial makeup of the township was 72.08% White, 4.23% African American, 0.40% Native American, 10.90% Asian, 0.02% Pacific Islander, 4.50% from other races, and 7.87% from two or more races. Hispanic or Latino of any race were 11.56% of the population.

There were 48,178 households, out of which 29.80% had children under the age of 18 living with them, 54.62% were married couples living together, 8.03% had a female householder with no spouse present, and 33.78% were non-families. 28.60% of all households were made up of individuals, and 14.70% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.22.

The township's age distribution consisted of 21.5% under the age of 18, 9.1% from 18 to 24, 25.4% from 25 to 44, 26.1% from 45 to 64, and 17.9% who were 65 years of age or older. The median age was 40.0 years. For every 100 females, there were 92.8 males. For every 100 females age 18 and over, there were 91.5 males.

The median income for a household in the township was $91,471, and the median income for a family was $116,108. Males had a median income of $64,552 versus $41,499 for females. The per capita income for the township was $49,386. About 3.1% of families and 5.5% of the population were below the poverty line, including 4.5% of those under age 18 and 6.1% of those age 65 or over.

• Elmhurst School District 205
• Westmont Community Unit School District 201
• DuPage High School District 88 (Willowbrook High School)

York Township was established in 1850 from land settled in 1849. The township seat is located in Lombard. The township government provides general assistance, property assessment, and road maintenance for unincorporated areas. The current Supervisor is Timothy M. Murray (elected 2025).^[18]

• DuPage County, Illinois
• List of townships in Illinois