St. Charles, South Dakota Demographics & Population 2026
During the 2020–2024 ACS period, St. Charles, South Dakota had a total population of 6, the 429th largest community in South Dakota. The poverty rate is 50.0%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- More than 1 in 4 residents live below the poverty line (50.0%), well above the national average of 12.4%.
- Only 0.0% of adults have a bachelor's degree, well below the national average of 35.7%.
- Unemployment rate of 33.3% is notably above the national average.
St. Charles Quick Facts
How St. Charles Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 11 | 6 | -45.5% |
How St. Charles Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 35 | National average: 61
Education
Educational Attainment (Adults 25+)
St. Charles Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Gregory County
Cities Similar to St. Charles
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Gann Valley | 6 | N/A | N/A | 0.0% | 0.0% |
| Waverly | 7 | N/A | N/A | 0.0% | 0.0% |
| Wetonka | 7 | N/A | N/A | 40.0% | 0.0% |
| Ardmore | 5 | N/A | N/A | 0.0% | 100.0% |
| Dudley | 8 | N/A | N/A | 0.0% | 0.0% |
A note before these figures: with a population of 6, St. Charles's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
St. Charles is a small community located in South Dakota, within Gregory County. The total population is 6. It ranks as the 429th most populous out of 439 Census-designated places in South Dakota.
Age Demographics
The median age in St. Charles is 67.0 years. This is 76% higher than the state median of 38.0 years. 16.7% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.
Economy, Income & Housing
The poverty rate stands at 50.0%. This is 319% higher than the state poverty rate of 11.9%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 33.3%. This is 1038% higher than the state rate of 2.9%. 66.7% of occupied housing units are owner-occupied. This homeownership rate is 3% lower than the state average of 68.6%.
Race & Ethnicity
Every resident counted in St. Charles was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.
Education
0.0% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample.
Data Sources & Methodology
All demographic data for St. Charles, South Dakota is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against South Dakota state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 439 Census-designated places in South Dakota. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all South Dakota city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of St. Charles, South Dakota?
St. Charles, South Dakota has a population of 6 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in St. Charles, SD?
The Census Bureau does not publish a reliable median household income estimate for St. Charles — the community is too small for the ACS sample. The national median is $80,734.
What is the poverty rate in St. Charles, SD?
The poverty rate in St. Charles is 50.0%. This means approximately 3 residents live below the federal poverty line.
What is the racial makeup of St. Charles, South Dakota?
St. Charles's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in St. Charles, SD?
The Census Bureau does not publish a reliable median home value estimate for St. Charles — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is St. Charles, South Dakota?
0.0% of adults (25+) in St. Charles hold a bachelor's degree or higher, and 0.0% hold a graduate or professional degree.