Ortley, South Dakota Demographics & Population 2026

A note before these figures: with a population of 73, Ortley'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

Ortley is a small community located in South Dakota, within Roberts County. The total population is 73. It ranks as the 342nd most populous out of 439 Census-designated places in South Dakota.

Age Demographics

The median age in Ortley is 42.3 years. This is 11% higher than the state median of 38.0 years. With 28.8% of the population under 18, Ortley has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Ortley is $31,806. This is 58% lower than the state median of $75,081. It is also 61% lower than the national median of $80,734. The poverty rate stands at 47.9%. This is 302% 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 12.0%. This is 310% higher than the state rate of 2.9%. The median home value is $44,200. Housing costs are 83% lower than the state median of $257,400. With a home-value-to-income ratio of just 1.4x, Ortley is one of the most affordable housing markets in the area. 74.3% of occupied housing units are owner-occupied. This homeownership rate is 8% higher than the state average of 68.6%.

Race & Ethnicity

Ortley has a predominantly White (non-Hispanic) population, comprising 95.9% of all residents.

Education

14.6% 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 91.7%.

Data Sources & Methodology

All demographic data for Ortley, 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.