Grafton township is located in Miner County, South Dakota. Grafton township has a 2026 population of 59. Grafton township is currently declining at a rate of -3.28% annually and its population has decreased by -7.81% since the most recent census, which recorded a population of 64 in 2020.
The median age in Grafton township is 16.6 years: 31.3 years for males, and 14.5 years for females. For every 100 females there are 78.0 males.
Data after 2023 is projected based on recent change
Overall: 16.6 years
Female: 14.5 years
Male: 31.3 years
There are 32 adults, (0 of whom are seniors) in Grafton township.
Female: 41 (56.2%)
Male: 32 (43.8%)
The racial composition of Grafton township includes 100% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 73 | 100% |