| Official Name: | Cornish Township |
| Settlement Type: | Township |
| Pushpin Map: | Minnesota |
| Pushpin Label: | Cornish Township |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the state of Minnesota |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Minnesota |
| Subdivision Type2: | County |
| Subdivision Name2: | Aitkin |
| Unit Pref: | Imperial |
| Area Total Km2: | 92.9 |
| Area Land Km2: | 89.0 |
| Area Water Km2: | 3.9 |
| Population As Of: | 2010 |
| Population Total: | 28 |
| Population Density Km2: | 0.3 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 396 |
| Elevation Ft: | 1299 |
| Coordinates: | 46.8969°N -93.2833°W |
| Blank Name: | FIPS code |
| Blank Info: | 27-13330[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0663874[2] |
Cornish Township is a township in Aitkin County, Minnesota, United States. The population was 28 as of the 2010 census.[3]
Cornish Township was named for Charles E. and Milo F. Cornish, early settlers.[4] It was incorporated on August 6, 1906.[5]
According to the United States Census Bureau, the township has a total area of 92.9km2, of which 89km2 is land and 3.9km2, or 4.22%, is water.[3]
As of the census of 2000, there were 27 people, 13 households, and 10 families residing in the township. The population density was 0.8sp=usNaNsp=us. There were 66 housing units at an average density of 1.9sp=usNaNsp=us. The racial makeup of the township was 100.00% White. Hispanic or Latino of any race were 3.70% of the population.
There were 13 households, out of which none had children under the age of 18 living with them, 69.2% were married couples living together, 7.7% had a female householder with no husband present, and 15.4% were non-families. 15.4% of all households were made up of individuals, and 7.7% had someone living alone who was 65 years of age or older. The average household size was 2.08 and the average family size was 2.27.
In the township the population was spread out, with 7.4% from 18 to 24, 11.1% from 25 to 44, 51.9% from 45 to 64, and 29.6% who were 65 years of age or older. The median age was 61 years. For every 100 females, there were 107.7 males. For every 100 females age 18 and over, there were 107.7 males.
The median income for a household in the township was $28,500, and the median income for a family was $29,000. Males had a median income of $28,750 versus $17,500 for females. The per capita income for the township was $16,188. None of the population and none of the families were below the poverty line.