Union Mills, Indiana Demographics & Population 2026

A note before these figures: with a population of 233, Union Mills'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

Union Mills is a small community located in Indiana. The total population is 233. It ranks as the 675th most populous out of 967 Census-designated places in Indiana.

Age Demographics

The median age in Union Mills is 33.6 years. This is 12% lower than the state median of 38.1 years. Only 13.7% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Union Mills is $93,523. This is 30% higher than the state median of $71,957. It is also 16% higher than the national median of $80,734. The ACS records no residents below the poverty line in Union Mills. 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 Union Mills, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $218,600. Housing costs are about the same as the state median of $218,200. With a home-value-to-income ratio of just 2.3x, Union Mills is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 42% higher than the state average of 70.5%.

Race & Ethnicity

Every resident counted in Union Mills 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

13.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 53% lower than the state rate of 29.5%. 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.

Data Sources & Methodology

All demographic data for Union Mills, Indiana 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 Indiana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 967 Census-designated places in Indiana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.