Population By Race and Ethnicity in St. Mary's County, MD in 2023

Updated on August 1, 2024.

Based on the US Census Vintage data estimates, in 2023, the 115,281 population of St. Mary's County, Maryland comprised of 7,232 people who identified as Hispanic (6.27%), and 108,049 people who identified as Non-Hispanic (93.73%).

Race: The White Alone population was the largest racial group in St. Mary's County, Maryland with a population of 88,109 (76.43%); Black or African American Alone population was the second largest racial group with a population of 18,541 (16.08%); and Two Or More Races was the third largest racial group with a population of 4,411 (3.83%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Mary's County, Maryland in 2023, with a population of 82,253 (71.35%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 17,905 (15.53%); and the third largest ethnic group was White Alone - Hispanic with a population of 5,856 (5.08%).

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 2023
Total Population:
Race in St. Mary's County, MD in 2023
Total Population:
Ethnicity in St. Mary's County, MD in 2023
Total Population:
Population By Race in St. Mary's , MD in 2023
Race Population Percentage
Black or African American Alone 18,541 16.08%
White Alone 88,109 76.43%
American Indian and Alaska Native Alone 588 0.51%
Asian Alone 3,486 3.02%
Native Hawaiian And Pacific Islander Alone 146 0.13%
Two Or More Races 4,411 3.83%
Population By Ethnicity in St. Mary's , MD in 2023
Ethnicity Population Percentage
Black or African American Alone - Hispanic 636 0.55%
White Alone - Hispanic 5,856 5.08%
American Indian and Alaska Native Alone - Hispanic 180 0.16%
Asian Alone - Hispanic 87 0.08%
Native Hawaiian And Pacific Islander Alone - Hispanic 31 0.03%
Two Or More Races - Hispanic 442 0.38%
Black or African American Alone - Non Hispanic 17,905 15.53%
White Alone - Non Hispanic 82,253 71.35%
American Indian and Alaska Native Alone - Non Hispanic 408 0.35%
Asian Alone - Non Hispanic 3,399 2.95%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 115 0.1%
Two Or More Races - Non Hispanic 3,969 3.44%