| Official Name: | Greenfield Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Grundy County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Grundy County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Grundy |
| Established Title: | Established |
| Established Date: | November 6, 1849 |
| Area Total Sq Mi: | 18.06 |
| Area Land Sq Mi: | 17.32 |
| Area Water Sq Mi: | 0.74 |
| Area Water Percent: | 4.08 |
| Population As Of: | 2020 |
| Population Total: | 991 |
| Population Density Sq Mi: | auto |
| Elevation M: | 179 |
| Elevation Ft: | 587 |
| Coordinates: | 41.1589°N -88.2739°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 60407, 60424, 60474, 60961 |
| Blank Name: | FIPS code |
| Blank Info: | 17-063-31381 |
| Unit Pref: | Imperial |
Greenfield Township is one of seventeen townships in Grundy County, Illinois, USA. As of the 2020 census, its population was 991 and it contained 449 housing units.[1]
The Township of Greenfield was organized on 6 November 1849, the Village of East Brooklyn was organized in ____, and the Village of South Wilmington was organized in ____. Villages remain part of the township.
On 10 March 1903, Garfield Township was separated from Greenfield Township. The southeastern portion of the village of Gardner, which is located mainly within Garfield Township, is in Greenfield Township. Garfield was begun centered at an intersection in 18__ prior to the township division.
The social and economic factors which led to the division of the township in 1905 have changed. Modern transportation, technological advances and familial relationships have led to increased cohesiveness between the five main communities within the two townships in the twenty-first century. The high schools are focal points of activity for the entire area. The villages are in many respects neighborhoods within the townships.
According to the 2021 census gazetteer files, Greenfield Township has a total area of 18.06sqmi, of which 17.32sqmi (or 95.92%) is land and 0.74sqmi (or 4.08%) is water.[2]
As of the 2020 census there were 991 people, 397 households, and 264 families residing in the township. The population density was 54.88PD/sqmi. There were 449 housing units at an average density of 24.87/sqmi. The racial makeup of the township was 95.56% White, 0.20% African American, 0.00% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.81% from other races, and 3.43% from two or more races. Hispanic or Latino of any race were 3.63% of the population.
There were 397 households, out of which 24.70% had children under the age of 18 living with them, 59.45% were married couples living together, 2.52% had a female householder with no spouse present, and 33.50% were non-families. 25.70% of all households were made up of individuals, and 12.60% had someone living alone who was 65 years of age or older. The average household size was 2.42 and the average family size was 2.98.
The township's age distribution consisted of 24.1% under the age of 18, 6.9% from 18 to 24, 29.2% from 25 to 44, 22.9% from 45 to 64, and 16.9% who were 65 years of age or older. The median age was 37.0 years. For every 100 females, there were 105.8 males. For every 100 females age 18 and over, there were 113.8 males.
The median income for a household in the township was $83,036, and the median income for a family was $91,667. Males had a median income of $71,696 versus $36,136 for females. The per capita income for the township was $36,527. About 1.9% of families and 5.3% of the population were below the poverty line, including 7.3% of those under age 18 and 6.2% of those age 65 or over.