| Official Name: | Alden Township |
| Settlement Type: | Township |
| Pushpin Map: | South Dakota#USA |
| Pushpin Label: | Alden Township |
| Pushpin Map Caption: | Location in South Dakota##Location in the United States |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | South Dakota |
| Subdivision Type2: | County |
| Subdivision Name2: | Hand County |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 35.57 |
| Area Land Sq Mi: | 35.56 |
| Area Water Sq Mi: | 0.01 |
| Population As Of: | 2000 |
| Population Total: | 33 |
| Population Density Sq Mi: | 0.9 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 484 |
| Elevation Ft: | 1588 |
| Coordinates: | 44.6711°N -99.1197°W |
| Area Code: | 605 |
| Blank Name: | FIPS code |
| Blank Info: | 46-059-00780[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | [2] |
Alden Township is a rural township in Hand County, South Dakota, United States. The population was 33 at the 2000 census.
Alden is located in survey township 114N Range 69W in the northwestern part of Hand County. The township covers 36.38sqmi, all land. Lost Creek, a minor tributary of the James River, flows through the central part of the township.
As of the census of 2000, there were 33 people, 11 households, and 10 families residing in the township. The population density was 0.9/mi2. There were 15 housing units at an average density of 0.4/mi2. The racial makeup of the township was 100.00% White.
There were 11 households, out of which 45.5% had children under the age of 18 living with them, 81.8% were married couples living together, 9.1% had a female householder with no husband present, 9.1% were non-families, and 36.4% had someone over the age of 65 in the household. The average household size was 3 and the average family size was 3.2.
In the township the population was spread out, with 36.4% under the age of 18, 3.0% from 18 to 24, 30.3% from 25 to 44, 15.2% from 45 to 64, and 15.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 83.3 males. For every 100 females age 18 and over, there were 90.9 males.
The median income for a household in the township was $116,860, and the median income for a family was more than $200,000. Males had a median income of more than $100,000 versus $0 for females. The per capita income for the township was $74,845. There were no families and none of the population living below the poverty line. Only 2 households reported incomes less than $25,000.