| Official Name: | Johnstown Township, Michigan |
| Settlement Type: | Township |
| Pushpin Map: | Michigan |
| Pushpin Label: | Johnstown Township |
| Pushpin Map Caption: | Location within the state of Michigan |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Michigan |
| Subdivision Type2: | County |
| Subdivision Name2: | Barry |
| Unit Pref: | Imperial |
| Area Total Km2: | 94.5 |
| Area Land Km2: | 90.5 |
| Area Water Km2: | 4.0 |
| Population As Of: | 2020 |
| Population Total: | 2841 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 280 |
| Elevation Ft: | 919 |
| Coordinates: | 42.4603°N -85.255°W |
| Blank Name: | FIPS code |
| Blank Info: | 26-41860[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626542 |
Johnstown Township is a civil township of Barry County in the U.S. state of Michigan. The population was 2,841 at the 2020 census.[2] Johnstown Township was originally established in 1838 but was much larger. It gained its current boundaries in 1849.[3]
According to the United States Census Bureau, the township has a total area of 94.5km2, of which 90.5km2 is land and 4km2, or 4.26%, is water.[4] The unincorporated community of Banfield is in the township.
As of the census of 2000, there were 3,067 people, 1,206 households, and 915 families residing in the township. The population density was 87sp=usNaNsp=us. There were 1,367 housing units at an average density of 38.8sp=usNaNsp=us. The racial makeup of the township was 98.08% White, 0.16% African American, 0.42% Native American, 0.03% Asian, 0.33% from other races, and 0.98% from two or more races. Hispanic or Latino of any race were 0.75% of the population.
There were 1,206 households, out of which 29.6% had children under the age of 18 living with them, 66.2% were married couples living together, 5.8% had a female householder with no husband present, and 24.1% were non-families. 19.7% of all households were made up of individuals, and 5.4% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 2.90.
In the township the population was spread out, with 23.5% under the age of 18, 6.9% from 18 to 24, 26.3% from 25 to 44, 31.2% from 45 to 64, and 12.0% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 103.0 males. For every 100 females age 18 and over, there were 102.3 males.
The median income for a household in the township was $50,216, and the median income for a family was $55,125. Males had a median income of $41,534 versus $35,369 for females. The per capita income for the township was $22,153. About 2.3% of families and 4.5% of the population were below the poverty line, including 3.7% of those under age 18 and 2.2% of those age 65 or over.