| Official Name: | Jerome Township, Union 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: | Union |
| Unit Pref: | Imperial |
| Area Total Km2: | 94.2 |
| Area Land Km2: | 94.1 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 36.4 |
| Area Land Sq Mi: | 36.3 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2020 |
| Population Footnotes: | [1] |
| Population Total: | 9504 |
| Population Density Km2: | 101.0 |
| Population Density Sq Mi: | 261.8 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Footnotes: | [2] |
| Elevation M: | 287 |
| Elevation Ft: | 942 |
| Coordinates: | 40.1425°N -83.2314°W |
| Blank Name: | FIPS code |
| Blank Info: | 39-39046[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1087078 |
Jerome Township is one of the fourteen townships of Union County, Ohio, United States. The 2020 census found 9,504 people in the township.
Located in the southeastern corner of the county, it borders the following townships:
Parts of two municipalities are located in Jerome Township: the village of Plain City in the southwest, and the city of Dublin in the southeast. The unincorporated communities of Arnold, Jerome, and New California are also located within the township.
Its location in the southeast corner of the county makes it the closest part of the county to Columbus.
It is the only Jerome Township statewide.[4]
Jerome Township was organized on March 12, 1821. As of 1854, the population of the township was 1249.[5]
In the Civil War, 367 residents of Jerome Township enlisted to fight. This was a remarkably high level, 151 more than were recognized as voters (only 216) and fully 25% of the population of 1398. It included several boys aged 16 and one aged 14. 75 of those who enlisted died or were killed in the war. They, and the service of township residents in the War of 1812, the Mexican War and the war with Spain in 1898, are commemorated with a war memorial more than 20 feet high in New California.[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.