Superior, Iowa Demographics & Population 2026

A note before these figures: with a population of 111, Superior'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

Superior is a small community located in Iowa, within Dickinson County. The total population is 111. It ranks as the 844th most populous out of 1,017 Census-designated places in Iowa.

Age Demographics

The median age in Superior is 48.1 years. This is 25% higher than the state median of 38.6 years. 10.8% 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 Superior is $75,625. This is about the same as the state median of $75,059. It is also 6% lower than the national median of $80,734. The poverty rate stands at 3.7%. This is 67% lower than the state poverty rate of 11.1%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.9%. This is 9% higher than the state rate of 3.6%. The median home value is $82,900. Housing costs are 60% lower than the state median of $208,000. With a home-value-to-income ratio of just 1.1x, Superior is one of the most affordable housing markets in the area. 97.8% of occupied housing units are owner-occupied. This homeownership rate is 36% higher than the state average of 71.7%.

Race & Ethnicity

Every resident counted in Superior 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

8.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 72% lower than the state rate of 31.4%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.7%.

Data Sources & Methodology

All demographic data for Superior, Iowa 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 Iowa state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,017 Census-designated places in Iowa. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.