Oldham is a city located in Kingsbury County, South Dakota. Oldham has a 2025 population of 117 . Oldham is currently declining at a rate of -0.85% annually and its population has decreased by -4.1% since the most recent census, which recorded a population of 122 in 2020.
The average household income in Oldham is $60,200 with a poverty rate of 19.39%. The median age in Oldham is 59.3 years: 62.1 years for males, and 58.8 years for females. For every 100 females there are 108.5 males.
Data after 2023 is projected based on recent change
The racial composition of Oldham includes 93.88% White, 3.06% Native American, and smaller percentages for and multiracial populations.
White (93.88%)
Native American (3.06%)
Two or more races (3.06%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 92 | 93.88% |
| Native American | 3 | 3.06% |
| Two or more races | 3 | 3.06% |
Married
Widowed
Divorced
Separated
Never Married
Oldham's average per capita income is $50,000. Household income levels show a median of $29,643. The poverty rate stands at 19.39%.
Name | Median | Mean |
|---|---|---|
| Married Families | $93,750 | - |
| Families | $83,750 | $76,253 |
| Households | $29,643 | $60,200 |
| Non Families | $26,250 | $52,880 |
Average Income
Median Household Income
Poverty Rate