St. George Island, Maryland Demographics & Population 2026

A note before these figures: with a population of 277, St. George Island'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

St. George Island is a small community located in Maryland, within St. Mary's County. The total population is 277. It ranks as the 428th most populous out of 527 Census-designated places in Maryland.

Age Demographics

The median age in St. George Island is 45.2 years. This is 15% higher than the state median of 39.4 years. With 35.0% of the population under 18, St. George Island has a notably young demographic profile, suggesting a family-oriented community. 13.7% 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 St. George Island is $250,000+. This is 141% higher than the state median of $103,678. It is also 210% higher than the national median of $80,734. The ACS records no residents below the poverty line in St. George Island. In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The survey records no unemployed residents in St. George Island, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $788,000. Housing costs are 88% higher than the state median of $419,900. The home-value-to-income ratio is 3.2x. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 48% higher than the state average of 67.6%.

Race & Ethnicity

The largest racial or ethnic group in St. George Island is White (non-Hispanic), making up 76.9% of the population. Black or African American residents account for 23.1%. The White (non-Hispanic) population is significantly higher than the state average (76.9% vs 46.6%).

Education

52.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 20% higher than the state rate of 43.5%. 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, 30.0% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for St. George Island, Maryland 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 Maryland state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 527 Census-designated places in Maryland. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.