| Centralia Township | |
| Settlement Type: | Township |
| Image Map1: | Illinois in United States (US48).svg |
| Map Caption1: | Location of Illinois in the United States |
| Coordinates: | 38.5167°N -94°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Marion |
| Established Title: | Settled |
| Established Date: | November 4, 1873 |
| Leader Title: | Mayor |
| Leader Title1: | Supervisor |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 36.1 |
| Area Land Sq Mi: | 35.02 |
| Area Water Sq Mi: | 1.08 |
| Elevation Ft: | 515 |
| Population As Of: | 2010 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 14547 |
| Population Density Sq Mi: | 429.5 |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Blank Name: | FIPS code |
| Blank Info: | 17-121-12177 |
| Blank Name Sec2: | Centralia Township Official Website |
| Blank2 Name Sec2: | Wikimedia Commons |
Centralia Township is located in Marion County, Illinois. As of the 2010 census, its population was 15,042 and it contained 7,360 housing units.[2]
Centralia township (T1N R1E) is centered at 38°31'N 89°5'W (38.517, -89.087). The city of Centralia is located in the western part of the township. The township is traversed by U.S. Route 51 (north-south) and by State Route 161 (east-west). According to the 2010 census, the township has a total area of, of which (or 97.01%) is land and (or 2.99%) is water.[2]