Population By Race and Ethnicity in Mercer County, NJ in 2011

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2011, the 367,407 population of Mercer County, New Jersey comprised of 56,964 people who identified as Hispanic (15.5%), and 310,443 people who identified as Non-Hispanic (84.5%).

Race: The White Alone population was the largest racial group in Mercer County, New Jersey with a population of 244,927 (66.66%); Black or African American Alone population was the second largest racial group with a population of 77,733 (21.16%); and Asian Alone was the third largest racial group with a population of 34,671 (9.44%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Mercer County, New Jersey in 2011, with a population of 197,863 (53.85%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 72,090 (19.62%); and the third largest ethnic group was White Alone - Hispanic with a population of 47,064 (12.81%).

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.

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Hispanics and Non Hispanics in Mercer County, NJ in 2011
Total Population:
Race in Mercer County, NJ in 2011
Total Population:
Ethnicity in Mercer County, NJ in 2011
Total Population:
Population By Race in Mercer , NJ in 2011
Race Population Percentage
Black or African American Alone 77,733 21.16%
White Alone 244,927 66.66%
American Indian and Alaska Native Alone 2,184 0.59%
Asian Alone 34,671 9.44%
Native Hawaiian And Pacific Islander Alone 672 0.18%
Two Or More Races 7,220 1.97%
Population By Ethnicity in Mercer , NJ in 2011
Ethnicity Population Percentage
Black or African American Alone - Hispanic 5,643 1.54%
White Alone - Hispanic 47,064 12.81%
American Indian and Alaska Native Alone - Hispanic 1,623 0.44%
Asian Alone - Hispanic 550 0.15%
Native Hawaiian And Pacific Islander Alone - Hispanic 505 0.14%
Two Or More Races - Hispanic 1,579 0.43%
Black or African American Alone - Non Hispanic 72,090 19.62%
White Alone - Non Hispanic 197,863 53.85%
American Indian and Alaska Native Alone - Non Hispanic 561 0.15%
Asian Alone - Non Hispanic 34,121 9.29%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 167 0.05%
Two Or More Races - Non Hispanic 5,641 1.54%