| Official Name: | Poplar Township, Minnesota |
| Settlement Type: | Township |
| Pushpin Map: | Minnesota#USA |
| 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: | Cass |
| Unit Pref: | Imperial |
| Area Total Km2: | 92.0 |
| Area Land Km2: | 92.0 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 35.5 |
| Area Land Sq Mi: | 35.5 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2020 |
| Population Total: | 179 |
| Population Density Km2: | 1.9 |
| Population Density Sq Mi: | 4.9 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 406 |
| Elevation Ft: | 1332 |
| Coordinates: | 46.5942°N -94.7069°W |
| Blank Name: | FIPS code |
| Blank Info: | 27-51964[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0665337[2] |
Poplar Township is a township in Cass County, Minnesota, United States. The population was 173 as of the 2000 census.[3] Poplar Township was named from the groves of poplar trees within its borders.[4]
According to the United States Census Bureau, the township has a total area of 35.5 square miles (92.0 km), of which 35.5 square miles (92.0 km) is land and 0.03% is water.
The township contains Poplar Cemetery.
As of the census of 2000, there were 173 people, 61 households, and 48 families residing in the township. The population density was 4.9/mi2. There were 79 housing units at an average density of 2.2/mi2. The racial makeup of the township was 96.53% White, 0.58% Native American, and 2.89% from two or more races.
There were 61 households, out of which 39.3% had children under the age of 18 living with them, 65.6% were married couples living together, 8.2% had a female householder with no husband present, and 21.3% were non-families. 18.0% of all households were made up of individuals, and 6.6% had someone living alone who was 65 years of age or older. The average household size was 2.84 and the average family size was 3.17.
In the township the population was spread out, with 26.6% under the age of 18, 12.1% from 18 to 24, 22.0% from 25 to 44, 22.0% from 45 to 64, and 17.3% who were 65 years of age or older. The median age was 39 years. For every 100 females, there were 101.2 males. For every 100 females age 18 and over, there were 108.2 males.
The median income for a household in the township was $36,875, and the median income for a family was $37,188. Males had a median income of $23,750 versus $20,500 for females. The per capita income for the township was $11,915. None of the families and 3.8% of the population were living below the poverty line.