| Official Name: | Spruce 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: | Roseau |
| Unit Pref: | Imperial |
| Area Total Km2: | 92.0 |
| Area Land Km2: | 91.9 |
| Area Water Km2: | 0.1 |
| Area Total Sq Mi: | 35.5 |
| Area Land Sq Mi: | 35.5 |
| Area Water Sq Mi: | 0.1 |
| Population As Of: | 2000 |
| Population Total: | 614 |
| Population Density Km2: | 6.7 |
| Population Density Sq Mi: | 17.3 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 323 |
| Elevation Ft: | 1060 |
| Coordinates: | 48.8408°N -95.6914°W |
| Blank Name: | FIPS code |
| Blank Info: | 27-62158[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 0665684[2] |
Spruce Township is a township in Roseau County, Minnesota, United States. The population of the township was 614 at the 2000 census. The unincorporated community of Mandus is located within Spruce Township.
Spruce Township was named for groves of spruce trees within its borders.[3]
According to the United States Census Bureau, the township has a total area of 35.5 square miles (92.0 km); 35.5 square miles (91.9 km) is land and 0.1 square mile (0.1 km) (0.14%) is water.
As of the census of 2000, there were 614 people, 222 households, and 180 families residing in the township. The population density was 17.3 people per square mile (6.7/km). There were 235 housing units at an average density of 6.6/sq mi (2.6/km). The racial makeup of the township was 98.05% White, 0.16% African American, 0.81% Asian, and 0.98% from two or more races. Hispanic or Latino of any race were 0.16% of the population.
There were 222 households, out of which 45.0% had children under the age of 18 living with them, 71.2% were married couples living together, 4.5% had a female householder with no husband present, and 18.9% were non-families. 17.1% 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 2.77 and the average family size was 3.13.
In the township the population was spread out, with 32.4% under the age of 18, 4.4% from 18 to 24, 27.4% from 25 to 44, 24.9% from 45 to 64, and 10.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 106.7 males. For every 100 females age 18 and over, there were 113.9 males.
The median income for a household in the township was $46,875, and the median income for a family was $51,667. Males had a median income of $34,306 versus $26,518 for females. The per capita income for the township was $19,985. About 2.4% of families and 3.4% of the population were below the poverty line, including 3.4% of those under age 18 and 6.1% of those age 65 or over.