Unionville (Butler County), Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 644, Unionville (Butler County)'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

Unionville (Butler County) is a small community located in Pennsylvania, within Butler County. The total population is 644. It ranks as the 1235th most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Unionville (Butler County) is 59.1 years. This is 44% higher than the state median of 40.9 years. Only 9.3% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Unionville (Butler County) is $58,235. This is 25% lower than the state median of $77,971. It is also 28% lower than the national median of $80,734. The poverty rate stands at 15.5%. This is 33% higher than the state poverty rate of 11.7%. The unemployment rate is 2.7%. This is 48% lower than the state rate of 5.3%. The median home value is $94,400. Housing costs are 63% lower than the state median of $254,500. With a home-value-to-income ratio of just 1.6x, Unionville (Butler County) is one of the most affordable housing markets in the area. 78.3% of occupied housing units are owner-occupied. This homeownership rate is 13% higher than the state average of 69.3%.

Race & Ethnicity

Every resident counted in Unionville (Butler County) 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

8.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 75% lower than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.1%.

Data Sources & Methodology

All demographic data for Unionville (Butler County), Pennsylvania 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 Pennsylvania state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,991 Census-designated places in Pennsylvania. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.