| Official Name: | Westfield Township |
| Settlement Type: | Township |
| Image Map1: | Map of Illinois highlighting Clark County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Clark County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Clark |
| Established Title: | Established |
| Established Date: | November 7, 1854 |
| Area Total Sq Mi: | 17.8 |
| Area Land Sq Mi: | 17.79 |
| Area Water Sq Mi: | 0.01 |
| Area Water Percent: | 0.06 |
| Population As Of: | 2020 |
| Population Total: | 658 |
| Population Density Sq Mi: | auto |
| Elevation M: | 207 |
| Elevation Ft: | 679 |
| Coordinates: | 39.4586°N -87.9606°W |
| Timezone: | CST |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 61933, 62442, 62474 |
| Blank Name: | FIPS code |
| Blank Info: | 17-023-80294 |
| Unit Pref: | Imperial |
Westfield Township is one of fifteen townships in Clark County, Illinois, USA. As of the 2020 census, its population was 658 and it contained 306 housing units.[1]
According to the 2010 census, the township has a total area of, of which (or 99.94%) is land and (or 0.06%) is water.[2]
The township contains these four cemeteries: Conrad Baptist, Good Hope, Maple Hill and Methodist.
As of the 2020 census there were 658 people, 308 households, and 202 families residing in the township. The population density was 37.02PD/sqmi. There were 306 housing units at an average density of 17.22/sqmi. The racial makeup of the township was 97.57% White, 0.76% African American, 0.15% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.00% from other races, and 1.52% from two or more races. Hispanic or Latino of any race were 0.61% of the population.
There were 308 households, out of which 27.60% had children under the age of 18 living with them, 55.19% were married couples living together, 3.57% had a female householder with no spouse present, and 34.42% were non-families. 28.90% of all households were made up of individuals, and 19.50% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 2.77.
The township's age distribution consisted of 20.0% under the age of 18, 8.1% from 18 to 24, 14.7% from 25 to 44, 28.9% from 45 to 64, and 28.2% who were 65 years of age or older. The median age was 47.9 years. For every 100 females, there were 109.6 males. For every 100 females age 18 and over, there were 108.3 males.
The median income for a household in the township was $58,095, and the median income for a family was $63,542. Males had a median income of $34,943 versus $23,167 for females. The per capita income for the township was $28,057. About 3.5% of families and 5.4% of the population were below the poverty line, including 3.5% of those under age 18 and 6.9% of those age 65 or over.