Population By Race and Ethnicity in Mercer County, NJ in 2019

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2019, the 368,047 population of Mercer County, New Jersey comprised of 67,814 people who identified as Hispanic (18.43%), and 300,233 people who identified as Non-Hispanic (81.58%).

Race: The White Alone population was the largest racial group in Mercer County, New Jersey with a population of 231,766 (62.97%); Black or African American Alone population was the second largest racial group with a population of 79,540 (21.61%); and Asian Alone was the third largest racial group with a population of 44,311 (12.04%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Mercer County, New Jersey in 2019, with a population of 177,062 (48.11%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 71,806 (19.51%); and the third largest ethnic group was White Alone - Hispanic with a population of 54,704 (14.86%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Mercer, New Jersey.

You can find similar information for other New Jersey counties, and for New Jersey.

See this for other years:
Hispanics and Non Hispanics in Mercer County, NJ in 2019
Total Population:
Race in Mercer County, NJ in 2019
Total Population:
Ethnicity in Mercer County, NJ in 2019
Total Population:
Population By Race in Mercer , NJ in 2019
Race Population Percentage
Black or African American Alone 79,540 21.61%
White Alone 231,766 62.97%
American Indian and Alaska Native Alone 2,462 0.67%
Asian Alone 44,311 12.04%
Native Hawaiian And Pacific Islander Alone 838 0.23%
Two Or More Races 9,130 2.48%
Population By Ethnicity in Mercer , NJ in 2019
Ethnicity Population Percentage
Black or African American Alone - Hispanic 7,734 2.1%
White Alone - Hispanic 54,704 14.86%
American Indian and Alaska Native Alone - Hispanic 1,863 0.51%
Asian Alone - Hispanic 642 0.17%
Native Hawaiian And Pacific Islander Alone - Hispanic 623 0.17%
Two Or More Races - Hispanic 2,248 0.61%
Black or African American Alone - Non Hispanic 71,806 19.51%
White Alone - Non Hispanic 177,062 48.11%
American Indian and Alaska Native Alone - Non Hispanic 599 0.16%
Asian Alone - Non Hispanic 43,669 11.87%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 215 0.06%
Two Or More Races - Non Hispanic 6,882 1.87%