Oahe Acres, South Dakota Demographics & Population 2026

A note before these figures: with a population of 399, Oahe Acres'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

Oahe Acres is a small community located in South Dakota, within Hughes County. The total population is 399. It ranks as the 170th most populous out of 439 Census-designated places in South Dakota.

Age Demographics

The median age in Oahe Acres is 33.8 years. This is 11% lower than the state median of 38.0 years. With 40.8% of the population under 18, Oahe Acres has a notably young demographic profile, suggesting a family-oriented community. 13.8% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Oahe Acres is $78,750. This is 5% higher than the state median of $75,081. It is also 2% lower than the national median of $80,734. The poverty rate stands at 6.3%. This is 47% lower than the state poverty rate of 11.9%. The survey records no unemployed residents in Oahe Acres, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $277,100. Housing costs are 8% higher than the state median of $257,400. The home-value-to-income ratio is 3.5x. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 46% higher than the state average of 68.6%.

Race & Ethnicity

Every resident counted in Oahe Acres 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

21.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 34% 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 83.0%.

Data Sources & Methodology

All demographic data for Oahe Acres, 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.