| Official Name: | Coldwater Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | bottom |
| Pushpin Label: | Coldwater 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: | Isabella |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 93.1 |
| Area Land Km2: | 92.9 |
| Area Water Km2: | 0.2 |
| Area Total Sq Mi: | 36.0 |
| Area Land Sq Mi: | 35.9 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2020 |
| Population Total: | 801 |
| Population Density Km2: | 8.6 |
| Population Density Sq Mi: | 22.3 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 322 |
| Elevation Ft: | 1056 |
| Coordinates: | 43.7736°N -85.0367°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 48632 (Lake) 48893, 49305 |
| Area Code: | 989 |
| Blank Name: | FIPS code |
| Blank Info: | 26-17060[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1626109 |
Coldwater Township is a civil township of Isabella County in the U.S. state of Michigan. The population was 801 at the 2020 census,[3] making it the least-populated township in the county.
According to the United States Census Bureau, the township has a total area of 36sqmi, of which 35.9sqmi is land and 0.1sqmi (0.22%) is water.
As of the census of 2000, there were 737 people, 277 households, and 222 families residing in the township. The population density was 20.5sp=usNaNsp=us. There were 405 housing units at an average density of 11.3sp=usNaNsp=us. The racial makeup of the township was 95.79% White, 0.54% African American, 1.49% Native American, 0.41% Asian, 0.41% from other races, and 1.36% from two or more races. Hispanic or Latino of any race were 1.76% of the population.
There were 277 households, out of which 31.0% had children under the age of 18 living with them, 65.0% were married couples living together, 7.9% had a female householder with no husband present, and 19.5% were non-families. 16.2% 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 2.66 and the average family size was 2.94.
In the township the population was spread out, with 25.0% under the age of 18, 6.8% from 18 to 24, 26.6% from 25 to 44, 25.9% from 45 to 64, and 15.7% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 107.0 males. For every 100 females age 18 and over, there were 107.9 males.
The median income for a household in the township was $34,853, and the median income for a family was $39,375. Males had a median income of $31,528 versus $23,523 for females. The per capita income for the township was $16,477. About 6.1% of families and 6.9% of the population were below the poverty line, including 8.9% of those under age 18 and 4.1% of those age 65 or over.