Greenfield is located in Brown County, South Dakota. Greenfield has a 2025 population of 37. Greenfield is currently growing at a rate of 2.78% annually and its population has increased by 5.71% since the most recent census, which recorded a population of 35 in 2020.
The median age in Greenfield is 47.3 years: 0 years for males, and 0 years for females.
Data after 2023 is projected based on recent change
The racial composition of Greenfield includes 100% White, and smaller percentages for and multiracial populations.
White (100.0%)
Race | Population | Percentage (of total) |
---|---|---|
White | 47 | 100% |
Married
Widowed
Divorced
Separated
Never Married