Rosslyn Farms, Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 534, Rosslyn Farms'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

Rosslyn Farms is a small community located in Pennsylvania, within Allegheny County. The total population is 534. It ranks as the 1320th most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Rosslyn Farms is 54.9 years. This is 34% higher than the state median of 40.9 years. 26.4% 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 Rosslyn Farms is $93,750. This is 20% higher than the state median of $77,971. It is also 16% higher than the national median of $80,734. The poverty rate stands at 0.6%. This is 95% lower than the state poverty rate of 11.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 5.5%. This is 4% higher than the state rate of 5.3%. The median home value is $446,200. Housing costs are 75% higher than the state median of $254,500. The home-value-to-income ratio is 4.8x. 97.8% of occupied housing units are owner-occupied. This homeownership rate is 41% higher than the state average of 69.3%.

Race & Ethnicity

The largest racial or ethnic group in Rosslyn Farms is White (non-Hispanic), making up 79.0% of the population. Black or African American residents account for 2.1%. The Black or African American population (2.1%) is well below the state average of 10.3%. The Hispanic or Latino population (1.1%) is well below the state average of 8.7%. The Asian population (0.2%) is well below the state average of 3.8%.

Education

77.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Rosslyn Farms in the top 10% of all cities in the state for educational attainment. This is 120% higher than the state rate of 35.2%. 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. Notably, 52.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Rosslyn Farms, 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.