Population By Race and Ethnicity in St. Mary's County, MD in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the 111,092 population of St. Mary's County, Maryland comprised of 5,335 people who identified as Hispanic (4.8%), and 105,757 people who identified as Non-Hispanic (95.2%).

Race: The White Alone population was the largest racial group in St. Mary's County, Maryland with a population of 87,793 (79.03%); Black or African American Alone population was the second largest racial group with a population of 15,949 (14.36%); and Two Or More Races was the third largest racial group with a population of 3,666 (3.3%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Mary's County, Maryland in 2015, with a population of 83,496 (75.16%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 15,513 (13.96%); and the third largest ethnic group was White Alone - Hispanic with a population of 4,297 (3.87%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in St. Mary's, Maryland.

You can find similar information for other Maryland counties, and for Maryland.

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Hispanics and Non Hispanics in St. Mary's County, MD in 2015
Total Population:
Race in St. Mary's County, MD in 2015
Total Population:
Ethnicity in St. Mary's County, MD in 2015
Total Population:
Population By Race in St. Mary's , MD in 2015
Race Population Percentage
Black or African American Alone 15,949 14.36%
White Alone 87,793 79.03%
American Indian and Alaska Native Alone 460 0.41%
Asian Alone 3,114 2.8%
Native Hawaiian And Pacific Islander Alone 110 0.1%
Two Or More Races 3,666 3.3%
Population By Ethnicity in St. Mary's , MD in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 436 0.39%
White Alone - Hispanic 4,297 3.87%
American Indian and Alaska Native Alone - Hispanic 145 0.13%
Asian Alone - Hispanic 81 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 28 0.03%
Two Or More Races - Hispanic 348 0.31%
Black or African American Alone - Non Hispanic 15,513 13.96%
White Alone - Non Hispanic 83,496 75.16%
American Indian and Alaska Native Alone - Non Hispanic 315 0.28%
Asian Alone - Non Hispanic 3,033 2.73%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 82 0.07%
Two Or More Races - Non Hispanic 3,318 2.99%