| Official Name: | Isabella Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | bottom |
| Pushpin Label: | Isabella 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: | Isabella |
| Government Footnotes: | [1] |
| Leader Title: | Supervisor |
| Leader Name: | Rick Ervin |
| Leader Title1: | Clerk |
| Leader Name1: | Kristin Derby |
| Unit Pref: | Imperial |
| Area Total Km2: | 94.22 |
| Area Land Km2: | 94.07 |
| Area Water Km2: | 0.21 |
| Area Total Sq Mi: | 36.38 |
| Area Land Sq Mi: | 36.32 |
| Area Water Sq Mi: | 0.08 |
| Population As Of: | 2020 |
| Population Total: | 2096 |
| Population Density Sq Mi: | 57.7 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 235 |
| Elevation Ft: | 771 |
| Coordinates: | 43.6836°N -84.7867°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 48858 (Mount Pleasant) 48878 (Rosebush) |
| Area Code: | 989 |
| Blank Name: | FIPS code |
| Blank Info: | 26-41160[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626531 |
Isabella Township is a civil township of Isabella County in the U.S. state of Michigan. The population was 2,096 at the 2020 census.
According to the U.S. Census Bureau, the township has a total area of 36.4sqmi, of which 0.04 square mile (0.1 km2, 0.05%) is water.
As of the census of 2000, there were 2,145 people, 787 households, and 569 families residing in the township. The population density was 59sp=usNaNsp=us. There were 836 housing units at an average density of 23sp=usNaNsp=us. The racial makeup of the township was 95.80% White, 0.61% African American, 2.56% Native American, 0.28% Asian, 0.28% from other races, and 0.47% from two or more races. Hispanic or Latino of any race were 0.98% of the population.
There were 787 households, out of which 37.6% had children under the age of 18 living with them, 59.1% were married couples living together, 9.9% had a female householder with no husband present, and 27.7% were non-families. 21.6% of all households were made up of individuals, and 7.4% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 3.15.
In the township the population was spread out, with 28.4% under the age of 18, 9.4% from 18 to 24, 29.5% from 25 to 44, 21.7% from 45 to 64, and 11.0% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 93.2 males. For every 100 females age 18 and over, there were 91.6 males.
The median income for a household in the township was $36,573, and the median income for a family was $43,661. Males had a median income of $33,558 versus $25,111 for females. The per capita income for the township was $16,995. About 6.3% of families and 9.6% of the population were below the poverty line, including 10.7% of those under age 18 and 13.5% of those age 65 or over.