Signal is located in Charles Mix County, South Dakota. Signal has a 2025 population of 59 . Signal is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 59 in 2020.
The median age in Signal is 8 years: 7.8 years for males, and 33.2 years for females. For every 100 females there are 137.1 males.
Data after 2023 is projected based on recent change
The racial composition of Signal includes 100% White, and smaller percentages for and multiracial populations.
White (100%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 83 | 100% |
Married
Widowed
Divorced
Separated
Never Married