| Official Name: | Winfield Township |
| Settlement Type: | Township |
| Image Blank Emblem: | Logo of Winfield Township, DuPage County, Illinois.png |
| Blank Emblem Type: | Logo |
| Image Map1: | Map of Illinois highlighting DuPage County.svg |
| Mapsize1: | 150px |
| Map Caption1: | DuPage County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | DuPage |
| Leader Title: | Supervisor |
| Leader Name: | Nicole Prater |
| Established Title: | Settled |
| Established Date: | November 6, 1849 |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.14 |
| Area Land Sq Mi: | 34.77 |
| Area Water Sq Mi: | 1.36 |
| Area Water Percent: | 3.77 |
| Population As Of: | 2020 |
| Population Total: | 46000 |
| Population Density Sq Mi: | auto |
| Elevation M: | 216 |
| Elevation Ft: | 709 |
| Coordinates: | 41.8564°N -88.2042°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 60185, 60187, 60190, 60504, 60510, 60555, 60563 |
| Blank Name: | FIPS code |
| Blank Info: | 17-043-82413 |
Winfield Township is one of nine townships in DuPage County, Illinois, USA. As of the 2020 census, its population was 45,836 and it contained 16,445 housing units.[1] It is the least populous of the DuPage County Townships.
According to the 2021 census gazetteer files, Winfield Township has a total area of 36.14sqmi, of which 34.77sqmi (or 96.23%) is land and 1.36sqmi (or 3.77%) is water.[2]
(This list is based on USGS data and may include former settlements.)
The township contains these seven cemeteries: Assumption, Big Woods, Calvary, Glen Oak, Oakwood, Pioneer and Warrenville.
As of the 2020 census there were 45,836 people, 15,540 households, and 10,979 families residing in the township. The population density was 1268.4PD/sqmi. There were 16,445 housing units at an average density of 455.07/sqmi. The racial makeup of the township was 57.26% White, 2.62% African American, 1.60% Native American, 3.79% Asian, 0.02% Pacific Islander, 19.94% from other races, and 14.76% from two or more races. Hispanic or Latino of any race were 38.18% of the population.
There were 15,540 households, out of which 33.70% had children under the age of 18 living with them, 55.65% were married couples living together, 11.04% had a female householder with no spouse present, and 29.35% were non-families. 23.20% of all households were made up of individuals, and 9.70% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.52.
The township's age distribution consisted of 23.9% under the age of 18, 10.1% from 18 to 24, 26.4% from 25 to 44, 27.4% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 36.7 years. For every 100 females, there were 97.8 males. For every 100 females age 18 and over, there were 97.4 males.
The median income for a household in the township was $86,431, and the median income for a family was $98,443. Males had a median income of $46,435 versus $32,803 for females. The per capita income for the township was $36,515. About 6.0% of families and 7.9% of the population were below the poverty line, including 12.7% of those under age 18 and 6.3% of those age 65 or over.