San Mar CDP, Maryland Demographics & Population 2026

Population Overview

San Mar CDP is a small community located in Maryland. The total population is 433. It ranks as the 391st most populous out of 528 cities and towns in Maryland.

Age Demographics

The median age in San Mar CDP is 66.9 years. This is 70% higher than the state median of 39.3 years. Only 2.3% of residents are under 18, indicating fewer families with children. 45.3% 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 San Mar CDP is $88,056. This is 13% lower than the state median of $101,652. Compared to the national median of $78,538, household income here is 12% higher. The poverty rate stands at 20.8%. This is 123% higher than the state poverty rate of 9.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 32.3%. This is 553% higher than the state rate of 4.9%. The median home value is $259,600. Housing costs are 35% lower than the state median of $397,700. With a home-value-to-income ratio of just 2.9x, San Mar CDP is one of the most affordable housing markets in the area. 69.9% of occupied housing units are owner-occupied. This homeownership rate is 4% higher than the state average of 67.5%.

Race & Ethnicity

San Mar CDP has a predominantly White (non-Hispanic) population, comprising 93.8% of all residents. Black or African American residents account for 5.3%. The White (non-Hispanic) population is significantly higher than the state average (93.8% vs 47.4%). The Black or African American population (5.3%) is well below the state average of 29.2%. The Hispanic or Latino population (0.9%) is well below the state average of 12.1%.

Education

15.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 63% lower than the state rate of 42.7%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.7%.

Data Sources & Methodology

All demographic data for San Mar CDP, Maryland is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Maryland state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 528 Census-designated places in Maryland. For official data, visit data.census.gov.