Round Lake, Minnesota Demographics & Population 2026

A note before these figures: with a population of 333, Round Lake'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

Round Lake is a small community located in Minnesota, within Nobles County. The total population is 333. It ranks as the 589th most populous out of 914 Census-designated places in Minnesota.

Age Demographics

The median age in Round Lake is 44.5 years. This is 15% higher than the state median of 38.8 years. Only 14.7% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Round Lake is $71,667. This is 20% lower than the state median of $89,062. It is also 11% lower than the national median of $80,734. The poverty rate stands at 7.0%. This is 25% lower than the state poverty rate of 9.3%. The unemployment rate is 6.5%. This is 61% higher than the state rate of 4.1%. The median home value is $109,900. Housing costs are 67% lower than the state median of $329,300. With a home-value-to-income ratio of just 1.5x, Round Lake is one of the most affordable housing markets in the area. 74.1% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 72.2%.

Race & Ethnicity

The largest racial or ethnic group in Round Lake is White (non-Hispanic), making up 83.8% of the population. Hispanic or Latino residents account for 7.8%. The Black or African American population (3.3%) is well below the state average of 7.0%. The Asian population (0.3%) is well below the state average of 5.1%.

Education

14.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 63% lower than the state rate of 39.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.2%.

Data Sources & Methodology

All demographic data for Round Lake, Minnesota 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 Minnesota state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 914 Census-designated places in Minnesota. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.