Population By Race and Ethnicity in St. Mary's County, MD in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 112,948 population of St. Mary's County, Maryland comprised of 6,059 people who identified as Hispanic (5.36%), and 106,889 people who identified as Non-Hispanic (94.64%).

Race: The White Alone population was the largest racial group in St. Mary's County, Maryland with a population of 88,308 (78.19%); Black or African American Alone population was the second largest racial group with a population of 16,618 (14.71%); and Two Or More Races was the third largest racial group with a population of 4,032 (3.57%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in St. Mary's County, Maryland in 2018, with a population of 83,370 (73.81%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 16,148 (14.3%); and the third largest ethnic group was White Alone - Hispanic with a population of 4,938 (4.37%).

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.

Data Source: US Census Bureau (Vintage).

See this for other years:

Hispanics and Non Hispanics in St. Mary's County, MD in 2018

Total Population:112,948

Non Hispanic (94.64%)

Hispanic (5.36%)

Race in St. Mary's County, MD in 2018

Total Population:112,948

White Alone (78.19%)

Black or African American Alone (14.71%)

Two or more races (3.57%)

Asian Alone (2.97%)

American Indian and Alaska Native Alone (0.45%)

Native Hawaiian And Pacific Islander Alone (0.11%)

Ethnicity in St. Mary's County, MD in 2018

Total Population:112,948

Non-Hispanic White Alone (73.81%)

Non-Hispanic Black or African American Alone (14.3%)

Hispanic White Alone (4.37%)

Non-Hispanic Two or more races (3.21%)

Non-Hispanic Asian Alone (2.89%)

All Other Ethnicities (1.42%)

Population By Race in St. Mary's , MD in 2018

Race	Population	Percentage
White Alone	88,308	78.19%
Black or African American Alone	16,618	14.71%
Two Or More Races	4,032	3.57%
Asian Alone	3,352	2.97%
American Indian and Alaska Native Alone	513	0.45%
Native Hawaiian And Pacific Islander Alone	125	0.11%

Population By Ethnicity in St. Mary's , MD in 2018

Ethnicity	Population	Percentage
White Alone - Non Hispanic	83,370	73.81%
Black or African American Alone - Non Hispanic	16,148	14.3%
White Alone - Hispanic	4,938	4.37%
Two Or More Races - Non Hispanic	3,627	3.21%
Asian Alone - Non Hispanic	3,264	2.89%
Black or African American Alone - Hispanic	470	0.42%
Two Or More Races - Hispanic	405	0.36%
American Indian and Alaska Native Alone - Non Hispanic	379	0.34%
American Indian and Alaska Native Alone - Hispanic	134	0.12%
Native Hawaiian And Pacific Islander Alone - Non Hispanic	101	0.09%
Asian Alone - Hispanic	88	0.08%
Native Hawaiian And Pacific Islander Alone - Hispanic	24	0.02%