McPherson County's 2026 population is estimated at 2,251, reflecting a -1.23% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). McPherson County is the 56th largest county in South Dakota. The 2010 population was 2,455 and has grown -8.31% since 2010.
Data after 2023 is projected based on recent change
Overall: 50 years
Female: 48.8 years
Male: 52.8 years
There are 1,732 adults, (711 of whom are seniors) in McPherson County.
Female: 1,089 (50.8%)
Male: 1,056 (49.2%)
The racial composition of McPherson County includes 96.78% White, and smaller percentages for Two or more races, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 2,076 | 96.78% |
| Two or more races | 62 | 2.89% |
| Native Hawaiian or Pacific Islander | 4 | 0.19% |
| Native American | 3 | 0.14% |
McPherson County 's average per capita income is $43,633. Household income levels show a median of $66,906. The poverty rate stands at 12.86%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,593 | - |
| Families | $89,286 | $124,142 |
| Households | $66,906 | $106,329 |
| Non Families | $47,434 | $79,326 |
Average Income
Median Household Income
Poverty Rate