| Official Name: | Leoni Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | left |
| Pushpin Label: | Leoni Township |
| Pushpin Map Caption: | Location within the state of Michigan |
| Mapsize: | 250 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Jackson |
| Leader Title: | Supervisor |
| Leader Name: | Howard Linnabary |
| Leader Title1: | Clerk |
| Leader Name1: | Kerry Pickett |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 51.22 |
| Area Land Sq Mi: | 48.54 |
| Area Water Sq Mi: | 2.68 |
| Population As Of: | 2020 |
| Population Total: | 13847 |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 302 |
| Elevation Ft: | 991 |
| Coordinates: | 42.2547°N -84.3119°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 49201–49203 (Jackson) 49240 (Grass Lake) 49254 (Michigan Center) 49259 (Munith) |
| Area Code: | 517 |
| Blank Name: | FIPS code |
| Blank Info: | 26-46980[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626605 |
Leoni Township is a civil township of Jackson County in the U.S. state of Michigan. The population was 13,847 at the 2020 census.[2]
According to the United States Census Bureau, the township has a total area of 51.22sqmi, of which 48.54sqmi is land and 2.68sqmi (5.23%) is water.[3]
Center Lake is on the township's southern boundary and is adjacent to Michigan Center. Gilletts Lake, Brill Lake, and Goose Lake are in the central region of the township. The Portage River runs close to the northern border of the township. The entire township is part of the Grand River watershed.
As of the census of 2000, there were 13,459 people, 5,240 households, and 3,825 families residing in the township. The population density was 274.1sp=usNaNsp=us. There were 5,568 housing units at an average density of 113.4sp=usNaNsp=us. The racial makeup of the township was 97.04% White, 0.82% African American, 0.31% Native American, 0.33% Asian, 0.02% Pacific Islander, 0.31% from other races, and 1.17% from two or more races. Hispanic or Latino of any race were 1.62% of the population.
There were 5,240 households, out of which 33.4% had children under the age of 18 living with them, 56.7% were married couples living together, 11.5% had a female householder with no husband present, and 27.0% were non-families. 21.8% of all households were made up of individuals, and 8.7% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 2.97.
In the township the population was spread out, with 25.9% under the age of 18, 7.0% from 18 to 24, 30.0% from 25 to 44, 24.6% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 98.2 males. For every 100 females age 18 and over, there were 96.7 males.
The median income for a household in the township was $43,551, and the median income for a family was $47,032. Males had a median income of $38,306 versus $27,870 for females. The per capita income for the township was $19,329. About 6.5% of families and 7.9% of the population were below the poverty line, including 10.6% of those under age 18 and 6.1% of those age 65 or over.