Richwoods Township, Peoria County, Illinois should not be confused with Richwood Township, Jersey County, Illinois.
| Unit Pref: | Imperial |
| Settlement Type: | Township |
| Official Name: | Richwoods Township |
| Image Map1: | Map of Illinois highlighting Peoria County.svg |
| Mapsize1: | 150px |
| Map Caption1: | Peoria County's location in Illinois |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Peoria |
| Leader Title: | Supervisor |
| Established Title: | Established |
| Established Date: | November 6, 1849 |
| Area Total Sq Mi: | 3.11 |
| Area Land Sq Mi: | 2.99 |
| Area Water Sq Mi: | 0.13 |
| Area Water Percent: | 4.18 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 2039.8 |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 5938 |
| Blank Name: | FIPS code |
| Blank Info: | 17-143-63771 |
Richwoods Township is located in Peoria County, Illinois. The geographic designation is Township 9 North, Range 8 East of the Fourth Principal Meridian. As of the 2010 census, its population was 6,089 and it contained 3,048 housing units.[2] The majority of its area is the village of Peoria Heights, Illinois.
Part of Richwoods Township was given to City of Peoria Township when it was organized as a township in 1907. Until 1991, the City of Peoria Township grew as the city of Peoria did, and today, most of what was originally Richwoods Township lies within the 1991 city limits of Peoria, and therefore in the Township of the City of Peoria; however, small parts of Richwoods Township's northern sections remained when the boundaries of the Township of the City of Peoria were fixed in place by law in the 1990s, and these, along with the entire village of Peoria Heights, remain as Richwoods Township.
According to the 2010 census, the township has a total area of, of which (or 96.14%) is land and (or 4.18%) is water.[2]