Mill Run, Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 253, Mill Run'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

Mill Run is a small community located in Pennsylvania, within Blair County. The total population is 253. It ranks as the 1646th most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Mill Run is 49.7 years. This is 22% higher than the state median of 40.9 years. 20.5% 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 Mill Run is $86,771. This is 11% higher than the state median of $77,971. It is also 7% higher than the national median of $80,734. The poverty rate stands at 4.7%. This is 60% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The survey records no unemployed residents in Mill Run, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $74,700. Housing costs are 71% lower than the state median of $254,500. With a home-value-to-income ratio of just 0.9x, Mill Run is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 44% higher than the state average of 69.3%.

Race & Ethnicity

Every resident counted in Mill Run 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

3.3% 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. This is 91% 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 79.7%.

Data Sources & Methodology

All demographic data for Mill Run, 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.