| Official Name: | Greenbush Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | left |
| Pushpin Label: | Greenbush Township |
| Pushpin Map Caption: | Location within the state of Michigan##Location within the United States |
| Mapsize: | 250 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Clinton |
| Leader Title: | Supervisor |
| Leader Name: | Lee Thelen |
| Leader Title1: | Clerk |
| Leader Name1: | Ramona Smith |
| Unit Pref: | Imperial |
| Area Total Km2: | 91.82 |
| Area Land Km2: | 91.12 |
| Area Water Km2: | 0.70 |
| Area Total Sq Mi: | 35.45 |
| Area Land Sq Mi: | 35.18 |
| Area Water Sq Mi: | 0.27 |
| Population As Of: | 2020 |
| Population Total: | 2143 |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 222 |
| Elevation Ft: | 728 |
| Coordinates: | 43.075°N -84.5447°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 48831 (Elsie) 48833 (Eureka) 48879 (St. Johns) |
| Area Code: | 989 |
| Blank Name: | FIPS code |
| Blank Info: | 26-34840[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626395 |
Greenbush Township is a civil township of Clinton County in the U.S. state of Michigan. The population was 2,143 at the 2020 census.[2]
According to the United States Census Bureau, the township has a total area of 35.45sqmi, of which 35.18sqmi is land and 0.27sqmi (0.76%) is water.[4]
Greenbush Township is located in northern Clinton County and is bordered by Gratiot County to the north. U.S. Route 127 crosses the township, leading north to Mount Pleasant and south to Lansing.
As of the census of 2000, there were 2,115 people, 743 households, and 621 families residing in the township. The population density was 60sp=usNaNsp=us. There were 759 housing units at an average density of 21.5sp=usNaNsp=us. The racial makeup of the township was 98.77% White, 0.19% African American, 0.05% Native American, 0.19% Asian, 0.05% Pacific Islander, 0.33% from other races, and 0.43% from two or more races. Hispanic or Latino of any race were 1.75% of the population.
There were 743 households, out of which 37.0% had children under the age of 18 living with them, 74.3% were married couples living together, 6.2% had a female householder with no husband present, and 16.3% were non-families. 14.5% of all households were made up of individuals, and 6.5% had someone living alone who was 65 years of age or older. The average household size was 2.82 and the average family size was 3.11.
In the township the population was spread out, with 26.6% under the age of 18, 6.8% from 18 to 24, 28.9% from 25 to 44, 27.0% from 45 to 64, and 10.8% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 101.8 males. For every 100 females age 18 and over, there were 99.6 males.
The median income for a household in the township was $53,021, and the median income for a family was $57,721. Males had a median income of $40,391 versus $30,429 for females. The per capita income for the township was $21,453. About 1.7% of families and 3.3% of the population were below the poverty line, including 2.7% of those under age 18 and 3.9% of those age 65 or over.