Mount Gretna, Pennsylvania Demographics & Population 2026

A note before these figures: with a population of 208, Mount Gretna'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 is a small community located in Pennsylvania, within Lebanon County. The total population is 208. It ranks as the 1704th most populous out of 1,991 Census-designated places in Pennsylvania.

Age Demographics

The median age in Mount Gretna is 63.8 years. This is 56% higher than the state median of 40.9 years. Only 12.0% of residents are under 18, indicating fewer families with children. 12.0% 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 Mount Gretna is $113,500. This is 46% higher than the state median of $77,971. It is also 41% higher than the national median of $80,734. The poverty rate stands at 8.2%. This is 30% lower than the state poverty rate of 11.7%. The unemployment rate is 4.5%. This is 13% lower than the state rate of 5.3%. The median home value is $384,900. Housing costs are 51% higher than the state median of $254,500. The home-value-to-income ratio is 3.4x. 87.3% of occupied housing units are owner-occupied. This homeownership rate is 26% higher than the state average of 69.3%.

Race & Ethnicity

Mount Gretna has a predominantly White (non-Hispanic) population, comprising 91.8% of all residents. Hispanic or Latino residents account for 1.0%. The Hispanic or Latino population (1.0%) is well below the state average of 8.7%. The Asian population (1.0%) is well below the state average of 3.8%.

Education

64.8% of residents aged 25 and older hold a bachelor's degree or higher. This places Mount Gretna in the top 10% of all cities in the state for educational attainment. This is 84% 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 96.7%. Notably, 34.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Mount Gretna, 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.