| Unit Pref: | Imperial |
| Settlement Type: | Township |
| Official Name: | LimestoneTownship |
| 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: | 35.95 |
| Area Land Sq Mi: | 35.7 |
| Area Water Sq Mi: | 0.26 |
| Area Water Percent: | 0.72 |
| Population As Of: | 2010 |
| Population Density Sq Mi: | 552 |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 19236 |
| Blank Name: | FIPS code |
| Blank Info: | 17-143-43523 |
Limestone Township is located in Peoria County, Illinois. As of the 2020 census, its population was 18,357 and it contained 8,111 housing units.[2]
For the census year of 2010, its population was 19,705 and it contained 8,103 housing units.[3]
Limestone Township was named from the abundance of limestone and attendant lime kilns in the area.[4]
According to the 2010 census, the township has a total area of, of which (or 99.30%) is land and (or 0.72%) is water.[3]