Race, Diversity, and Ethnicity in Middlesex County, NJ

The map below shows majority race by area in Middlesex County, as self-identified on the US census. Darker shades indicate a larger racial majority in that neighborhood. This page also contains data and maps on Middlesex County racial diversity and diversity scores. Click here to scroll to diversity data.

Middlesex County, NJ map of race and ethnicity
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White
Hispanic
Black
Asian
Multiple/Other
WhiteHispanicBlackAsianMultiple/Other
Majority race by area

The majority race in Middlesex County overall is white, making up 37.0% of residents. The next most-common racial group is asian at 25.8%. There are more white people in the southeast areas of the county. People who identify as asian are most likely to be living in the north places. The data below shows how many people identify themselves as each of the following races, which most Americans base on their family's national origin:

Race in Middlesex County

 
Self-Identified Race
Middlesex County, NJ Population
White
37.0%
Hispanic
23.9%
Black
9.6%
Asian
25.8%
Native American
0.1%
Other
3.6%
   

Diversity and Diversity Scores for Middlesex County, NJ

The map below shows diversity in Middlesex County. Areas in green are more diverse, while areas in red are much less diverse. Diversity, in this case, means a mixture of people with different race and ethnicity living close to one another. For example, all-black and all-white areas in the county would both be considered lacking diversity.

Middlesex County, NJ map of race and ethnicity
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Middlesex County Diversity Score

72.9

More diverse than 100% of US counties

Middlesex County has a diversity score of 72.9: the chance, in percent, that two residents picked at random belong to different racial or ethnic groups, from ACS race counts. A place where everyone shares one group scores 0, and an even mix of the six groups in the chart above scores the maximum, 83.3. Middlesex County is much more diverse than other US counties, more diverse than 100% of them. Within Middlesex County's proper boundaries, the most diverse area is northwest Middlesex County, and the least diverse areas are in east Middlesex County.

Source: BestNeighborhood calculations from the U.S. Census Bureau, American Community Survey (ACS) 2020-2024 5-year estimates (race and Hispanic origin); proprietary data mapping and analysis. Special thanks to the University of Virginia.

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