Belvidere, South Dakota Demographics & Population 2026

A note before these figures: with a population of 114, Belvidere'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

Belvidere is a small community located in South Dakota, within Jackson County. The total population is 114. It ranks as the 286th most populous out of 439 Census-designated places in South Dakota.

Age Demographics

The median age in Belvidere is 14.6 years. This is 62% lower than the state median of 38.0 years. With 57.0% of the population under 18, Belvidere has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Belvidere is $50,469. This is 33% lower than the state median of $75,081. It is also 37% lower than the national median of $80,734. The ACS records no residents below the poverty line in Belvidere. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in Belvidere, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $17,500. Housing costs are 93% lower than the state median of $257,400. With a home-value-to-income ratio of just 0.3x, Belvidere is one of the most affordable housing markets in the area. 84.2% of occupied housing units are owner-occupied. This homeownership rate is 23% higher than the state average of 68.6%.

Race & Ethnicity

The largest racial or ethnic group in Belvidere is White (non-Hispanic), making up 65.8% of the population.

Education

0.0% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 65.3%.

Data Sources & Methodology

All demographic data for Belvidere, 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.