| Official Name: | Au Sable Township, Michigan |
| Settlement Type: | Civil township |
| Pushpin Map: | Michigan#USA |
| Pushpin Label Position: | right |
| Pushpin Label: | Au Sable 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: | Roscommon |
| Leader Title: | Supervisor |
| Leader Name: | Kurtis Norton |
| Leader Title1: | Clerk |
| Leader Name1: | Ron Watson |
| Established Title: | Established |
| Established Date: | 1947 |
| Unit Pref: | Imperial |
| Area Total Km2: | 92.67 |
| Area Land Km2: | 92.36 |
| Area Water Km2: | 0.31 |
| Area Total Sq Mi: | 35.78 |
| Area Land Sq Mi: | 35.66 |
| Area Water Sq Mi: | 0.12 |
| Population As Of: | 2020 |
| Population Total: | 236 |
| Population Density Sq Mi: | 6.62 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 350 |
| Elevation Ft: | 1148 |
| Coordinates: | 44.4547°N -84.4408°W |
| Postal Code Type: | ZIP code(s) |
| Postal Code: | 48653 (Roscommon) 48656 (St. Helen) |
| Area Code: | 989 |
| Blank Name: | FIPS code |
| Blank Info: | 26-04320[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1625866 |
Au Sable Township is a civil township of Roscommon County in the U.S. state of Michigan. The population was 236 at the 2020 census, which makes it the county's least-populated municipality.
Au Sable Township was established in 1947 from the northern 361NaN1 survey township area of Richfield Township. It was named after the southern branch of the Au Sable River, which flows through the township.
According to the U.S. Census Bureau, the township has a total area of 35.78sqmi, of which 35.66sqmi is land and 0.12sqmi (0.33%) is water.[3]
As of the census of 2000, there were 281 people, 110 households, and 76 families residing in the township. The population density was 7.9sp=usNaNsp=us. There were 201 housing units at an average density of 5.6sp=usNaNsp=us. The racial makeup of the township was 100.00% White.
There were 110 households, out of which 23.6% had children under the age of 18 living with them, 60.9% were married couples living together, 4.5% had a female householder with no husband present, and 30.9% were non-families. 23.6% of all households were made up of individuals, and 9.1% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 2.99.
In the township the population was spread out, with 24.6% under the age of 18, 3.2% from 18 to 24, 24.6% from 25 to 44, 30.2% from 45 to 64, and 17.4% who were 65 years of age or older. The median age was 44 years. For every 100 females, there were 106.6 males. For every 100 females age 18 and over, there were 109.9 males.
The median income for a household in the township was $30,000, and the median income for a family was $29,375. Males had a median income of $30,083 versus $29,063 for females. The per capita income for the township was $13,651. About 17.3% of families and 23.9% of the population were below the poverty line, including 40.0% of those under the age of eighteen and 20.0% of those 65 or over.
Au Sable Township is served entirely by Roscommon Area Public Schools to the west in Gerrish Township.[4]
The township was once home to the main campus of Kirtland Community College, which was founded in 1966. In 2016, the college moved its location to Grayling.