| Official Name: | Austin Township, Michigan |
| Settlement Type: | Township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | left |
| 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: | Sanilac |
| Unit Pref: | Imperial |
| Area Total Km2: | 93.8 |
| Area Land Km2: | 93.8 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 36.2 |
| Area Land Sq Mi: | 36.2 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2020 |
| Population Total: | 619 |
| Population Density Km2: | 6.6 |
| Population Density Sq Mi: | 17.1 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 235 |
| Elevation Ft: | 771 |
| Coordinates: | 43.6425°N -82.9478°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 48472 (Snover)[1] 48475 (Ubly)[2] |
| Blank Name: | FIPS code |
| Blank Info: | 26-04400[3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1625868 |
Austin Township is a civil township of Sanilac County of the U.S. state of Michigan. As of the 2020 census, the township had a total population 619. The township was organized in 1851.
According to the United States Census Bureau, the township has a total area of 36.2sqmi, all land.
As of the census of 2000, there were 673 people, 242 households, and 186 families residing in the township. The population density was 18.6sp=usNaNsp=us. There were 298 housing units at an average density of 8.2sp=usNaNsp=us. The racial makeup of the township was 99.26% White, 0.15% African American, 0.45% Native American, and 0.15% from two or more races. Hispanic or Latino of any race were 0.45% of the population.
There were 242 households, out of which 32.2% had children under the age of 18 living with them, 64.9% were married couples living together, 7.0% had a female householder with no husband present, and 23.1% were non-families. 20.2% 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 2.76 and the average family size was 3.21.
In the township the population was spread out, with 27.8% under the age of 18, 7.1% from 18 to 24, 27.8% from 25 to 44, 22.7% from 45 to 64, and 14.6% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 112.3 males. For every 100 females age 18 and over, there were 104.2 males.
The median income for a household in the township was $35,139, and the median income for a family was $38,594. Males had a median income of $27,708 versus $21,250 for females. The per capita income for the township was $15,041. About 9.4% of families and 11.1% of the population were below the poverty line, including 14.3% of those under age 18 and 21.4% of those age 65 or over.