Olivia, Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 387, Olivia'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

Olivia is a small community located in Pennsylvania, within Blair County. The total population is 387. It ranks as the 1475th most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Olivia is 17.3 years. This is 58% lower than the state median of 40.9 years. With 58.7% of the population under 18, Olivia has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Olivia is $100,775. This is 29% higher than the state median of $77,971. It is also 25% higher than the national median of $80,734. The poverty rate stands at 2.3%. This is 80% 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 46.8%. This is 790% higher than the state rate of 5.3%. The median home value is $215,500. Housing costs are 15% lower than the state median of $254,500. With a home-value-to-income ratio of just 2.1x, Olivia 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 Olivia 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

83.8% of residents aged 25 and older hold a bachelor's degree or higher. This places Olivia in the top 10% of all cities in the state for educational attainment. This is 138% 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, 41.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Olivia, 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.