| Official Name: | Jefferson Township |
| Settlement Type: | Township |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Adams |
| Government Type: | Indiana township |
| Area Total Sq Mi: | 24.13 |
| Area Land Sq Mi: | 24.1 |
| Area Water Sq Mi: | 0.03 |
| Area Water Percent: | 0.12 |
| Population As Of: | 2020 |
| Population Total: | 1363 |
| Population Density Sq Mi: | auto |
| Elevation M: | 262 |
| Elevation Ft: | 860 |
| Coordinates: | 40.6133°N -84.8444°W |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Postal Code Type: | ZIP codes |
| Postal Code: | 46711, 46740, 47326 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 453477 |
Jefferson Township is one of twelve townships in Adams County, Indiana.[1] As of the 2020 census, its population was 1,363,[2] up from 1,089 at the previous census.[3]
According to the "2020 American Community Survey 5-Year Estimates", 33.9% of the township's population spoke only English, while 63.9 spoke an "other [than Spanish] Indo-European language"[2] (basically Pennsylvania German/German).
According to the 2010 census, the township has a total area of, of which (or 99.88%) is land and (or 0.12%) is water.[3]
The township contains the following cemeteries: Loofborrow, Rumple (also known as Cook- no longer exists), and St. Mary Catholic.