Shamrock Colony, South Dakota Demographics & Population 2026

A note before these figures: with a population of 72, Shamrock Colony'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

Shamrock Colony is a small community located in South Dakota, within Beadle County. The total population is 72. It ranks as the 346th most populous out of 439 Census-designated places in South Dakota.

Age Demographics

The median age in Shamrock Colony is 35.6 years. This is 6% lower than the state median of 38.0 years. With 34.7% of the population under 18, Shamrock Colony has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The poverty rate stands at 59.6%. This is 399% 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 survey records no unemployed residents in Shamrock Colony, which reflects the size of the sample rather than a labor market without joblessness.

Race & Ethnicity

Every resident counted in Shamrock Colony 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

100.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Shamrock Colony in the top 10% of all cities in the state for educational attainment. This is 213% higher than the state rate of 31.9%. 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. Notably, 59.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Shamrock Colony, 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.