Mount Gretna Heights, Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 325, Mount Gretna Heights'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

Mount Gretna Heights is a small community located in Pennsylvania, within Lebanon County. The total population is 325. It ranks as the 1552nd most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Mount Gretna Heights is 37.3 years. This is 9% lower than the state median of 40.9 years. With 34.2% of the population under 18, Mount Gretna Heights has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Mount Gretna Heights is $99,792. This is 28% higher than the state median of $77,971. It is also 24% higher than the national median of $80,734. The poverty rate stands at 1.5%. This is 87% 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 9.9%. This is 89% higher than the state rate of 5.3%. The median home value is $377,000. Housing costs are 48% higher than the state median of $254,500. The home-value-to-income ratio is 3.8x. 94.7% of occupied housing units are owner-occupied. This homeownership rate is 37% higher than the state average of 69.3%.

Race & Ethnicity

Every resident counted in Mount Gretna Heights 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

58.9% of residents aged 25 and older hold a bachelor's degree or higher. This places Mount Gretna Heights in the top 10% of all cities in the state for educational attainment. This is 67% higher 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 97.4%. Notably, 26.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Mount Gretna Heights, 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.