| Salem Township | |
| Settlement Type: | Township |
| Image Map1: | Illinois in United States (US48).svg |
| Map Caption1: | Location of Illinois in the United States |
| Coordinates: | 38.6°N -147°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: | 35.72 |
| Area Land Sq Mi: | 35.38 |
| Area Water Sq Mi: | 0.34 |
| Elevation Ft: | 512 |
| Population As Of: | 2010 |
| Pop Est As Of: | 2016 |
| Pop Est Footnotes: | [1] |
| Population Est: | 8993 |
| Population Density Sq Mi: | 262.5 |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Blank Name: | FIPS code |
| Blank Info: | 17-121-67249 |
| Blank2 Name Sec2: | Wikimedia Commons |
Salem Township is located in Marion County, Illinois. As of the 2010 census, its population was 9,286 and it contained 4,225 housing units.[2]
Salem Township (T2N R2E) is centered at 38°36'N 88°59'W (38.619, -88.980). It is traversed north–south by Interstate Route 57 and State Route 37 and east–west by U.S. Route 50. The city of Salem is located in the northeastern part of the township as is most of the Salem Reservoir (El. 166 m). According to the 2010 census, the township has a total area of, of which (or 99.05%) is land and (or 0.95%) is water.[2]