| Official Name: | Jefferson Township, Jackson County, Ohio |
| Settlement Type: | Township |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Jackson |
| Unit Pref: | Imperial |
| Area Total Km2: | 95.6 |
| Area Land Km2: | 94.7 |
| Area Water Km2: | 0.9 |
| Area Total Sq Mi: | 36.9 |
| Area Land Sq Mi: | 36.6 |
| Area Water Sq Mi: | 0.3 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 3509 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Footnotes: | [2] |
| Elevation M: | 255 |
| Elevation Ft: | 837 |
| Coordinates: | 38.8872°N -82.6008°W |
| Blank Name: | FIPS code |
| Blank Info: | 39-38654[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1086368 |
Jefferson Township is one of the twelve townships of Jackson County, Ohio, United States. As of the 2020 census, 3,509 people lived in the township.
Located in the southern part of the county, it borders the following townships:
north
east
southeast
south
southwest
west
northwest corner
Part of the village of Oak Hill is located in eastern Jefferson Township.
Jefferson Township was organized around 1818, and named for Thomas Jefferson, the third President of the United States.[4] It is one of twenty-four Jefferson Townships statewide.[5]
Jefferson Township has the twelfth largest population of people of Welsh descent in the United States, and sixth largest in Ohio.[6]
The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1. Two are elected in the year after the presidential election and one is elected in the year before it. There is also an elected township fiscal officer,[7] who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election. Vacancies in the fiscal officership or on the board of trustees are filled by the remaining trustees.