Lower Brule, South Dakota Demographics & Population 2026

A note before these figures: with a population of 743, Lower Brule'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

Lower Brule is a small community located in South Dakota, within Lyman County. The total population is 743. It ranks as the 108th most populous out of 439 Census-designated places in South Dakota.

Age Demographics

The median age in Lower Brule is 22.9 years. This is 40% lower than the state median of 38.0 years. With 34.7% of the population under 18, Lower Brule has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Lower Brule is $28,750. This is 62% lower than the state median of $75,081. It is also 64% lower than the national median of $80,734. The poverty rate stands at 55.8%. This is 367% 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 6.9%. This is 135% higher than the state rate of 2.9%. The median home value is $21,900. Housing costs are 91% lower than the state median of $257,400. With a home-value-to-income ratio of just 0.8x, Lower Brule is one of the most affordable housing markets in the area. 23.0% of occupied housing units are owner-occupied. This homeownership rate is 67% lower than the state average of 68.6%.

Race & Ethnicity

Lower Brule is a highly diverse community where no single racial or ethnic group constitutes a majority of the population. Hispanic or Latino residents account for 0.4%. The White (non-Hispanic) population (7.7%) is well below the state average of 79.8%. The Hispanic or Latino population (0.4%) is well below the state average of 4.8%.

Education

14.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 54% 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 80.1%.

Data Sources & Methodology

All demographic data for Lower Brule, 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.