New Underwood, South Dakota Demographics & Population 2026
During the 2020–2024 ACS period, New Underwood, South Dakota had a total population of 509, the 151st largest city in South Dakota, with a median household income of $56,250, which is 25% lower than the state average. The poverty rate is 25.8%.
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 (25.8%), well above the national average of 12.4%.
New Underwood Quick Facts
How New Underwood 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 | 538 | 509 | -5.4% |
| Median household income | $54,167 | $56,250 | +3.8% |
| Median home value | $188,700 | $193,800 | +2.7% |
How New Underwood 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+)
New Underwood Rankings in South Dakota
Explore South Dakota Rankings
Other Cities in Pennington County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Rapid City | 77,946 | $70,870 | 12.5% | $299,400 |
| Box Elder | 12,902 | $73,008 | 7.5% | $302,100 |
| Rapid Valley | 6,975 | $83,208 | 4.5% | $255,500 |
| Colonial Pine Hills | 2,609 | $98,696 | 0.2% | $406,500 |
| Green Valley | 1,642 | $81,582 | 1.0% | $280,300 |
| Ashland Heights | 1,105 | $57,353 | 30.7% | $219,600 |
| Hill City | 834 | $95,385 | 2.6% | $286,200 |
| Johnson Siding | 704 | $102,716 | 10.2% | $471,700 |
| Wall | 622 | $58,984 | 8.8% | $164,800 |
| Keystone | 336 | $64,702 | 6.9% | $263,900 |
Cities Similar to New Underwood
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Wanblee | 534 | N/A | N/A | 7.9% | 53.4% |
| Dupree | 557 | $53,958 | $66,200 | 10.2% | 27.5% |
| Philip | 571 | $56,635 | $182,100 | 15.9% | 15.6% |
| Bowdle | 475 | $63,750 | $112,500 | 26.0% | 8.4% |
| Parmelee | 584 | N/A | N/A | 9.3% | 84.9% |
A note before these figures: with a population of 509, New Underwood'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
New Underwood is a small community located in South Dakota, within Pennington County. The total population is 509. It ranks as the 151st most populous out of 439 Census-designated places in South Dakota.
Age Demographics
The median age in New Underwood is 46.6 years. This is 23% higher than the state median of 38.0 years.
Economy, Income & Housing
The median household income in New Underwood is $56,250. This is 25% lower than the state median of $75,081. It is also 30% lower than the national median of $80,734. The poverty rate stands at 25.8%. This is 116% 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 7.0%. This is 139% higher than the state rate of 2.9%. The median home value is $193,800. Housing costs are 25% lower than the state median of $257,400. The home-value-to-income ratio is 3.4x. 68.2% of occupied housing units are owner-occupied.
Race & Ethnicity
The largest racial or ethnic group in New Underwood is White (non-Hispanic), making up 83.1% of the population. Hispanic or Latino residents account for 10.0%. The Hispanic or Latino population is significantly higher than the state average (10.0% vs 4.8%).
Education
10.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 68% lower than the state rate of 31.9%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.7%.
Data Sources & Methodology
All demographic data for New Underwood, 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.
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Frequently Asked Questions
What is the population of New Underwood, South Dakota?
New Underwood, South Dakota has a population of 509 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in New Underwood, SD?
The median household income in New Underwood is $56,250, which is 30% lower than the national median of $80,734.
What is the poverty rate in New Underwood, SD?
The poverty rate in New Underwood is 25.8%. This means approximately 111 residents live below the federal poverty line.
What is the racial makeup of New Underwood, South Dakota?
New Underwood's population is 83.1% White, 0.0% Black, 10.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in New Underwood, SD?
The median home value in New Underwood is $193,800. The home-value-to-income ratio is 3.4x.
How educated is New Underwood, South Dakota?
10.4% of adults (25+) in New Underwood hold a bachelor's degree or higher, and 1.7% hold a graduate or professional degree.