Lisle Township, Illinois

Lisle Township
Township
Flag
Seal
Location in DuPage County
DuPage County's location in Illinois
Coordinates: 41°46′18″N 88°05′19″W / 41.77167°N 88.08861°W / 41.77167; -88.08861
Country United States
State Illinois
CountyDuPage
EstablishedNovember 6, 1849
Government
 • SupervisorDr. Joann Wright
Area
 • Total
35.99 sq mi (93.2 km2)
 • Land35.37 sq mi (91.6 km2)
 • Water0.61 sq mi (1.6 km2)  1.70%
Elevation
[1]
715 ft (218 m)
Population
 (2020)
 • Total
119,040
 • Density3,366/sq mi (1,299/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP codes
60440, 60515, 60516, 60517, 60532, 60540, 60563, 60565
FIPS code17-043-43952
WebsiteLisle Township

Lisle Township is one of nine townships in DuPage County, Illinois, United States. As of the 2020 census, its population was 119,040 and it contained 48,875 housing units.[2]

Geography

According to the 2021 census gazetteer files, Lisle Township has a total area of 35.99 square miles (93.21 km2), of which 35.37 square miles (91.61 km2) (or 98.30%) is land and 0.61 square miles (1.58 km2) (or 1.70%) is water.[3]

Cities, towns, and villages

Unincorporated communities

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

Landmarks

  • Morton Arboretum (headquarters in Lisle)
  • DuPage County Green Valley Forest Preserve

Transportation

Major highways

Demographics

As of the 2020 census[2] there were 119,040 people, 47,159 households, and 31,453 families residing in the township. The population density was 3,308.05 inhabitants per square mile (1,277.25/km2). There were 48,875 housing units at an average density of 1,358.20 per square mile (524.40/km2). The racial makeup of the township was 69.67% White, 5.67% African American, 0.28% Native American, 13.29% Asian, 0.04% Pacific Islander, 3.56% from other races, and 7.50% from two or more races. Hispanic or Latino of any race were 9.36% of the population.

There were 47,159 households, of which 29.80% had children under the age of 18 living with them, 55.69% were married couples living together, 8.06% had a female householder with no spouse present, and 33.30% were non-families. 27.90% of all households were made up of individuals, and 10.50% had someone living alone who was 65 years of age or older. The average household size was 2.49 and the average family size was 3.10.

The median age was 39.6 years. For every 100 females, there were 102.7 males. For every 100 females age 18 and over, there were 99.9 males.

The median income for a household in the township was $102,013, and the median income for a family was $127,529. The per capita income was $52,189. About 3.1% of families and 4.6% of the population were below the poverty line, including 5.6% of those under age 18 and 3.4% of those age 65 or over.

Historical population
CensusPop.Note%±
19306,103—
19407,75627.1%
195011,23744.9%
196020,98286.7%
197047,818127.9%
198082,57572.7%
1990108,45231.3%
2000117,6048.4%
2010116,268−1.1%
2020119,0402.4%
U.S. Decennial Census[4]

Education

Political districts

References

  1. ^ U.S. Geological Survey Geographic Names Information System: Lisle Township, Illinois
  2. ^ a b "Explore Census Data: Lisle township, DuPage County, Illinois". data.census.gov. Retrieved October 29, 2025.
  3. ^ "Gazetteer Files". Census.gov. United States Census Bureau. Retrieved October 29, 2025.
  4. ^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
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