In 2020, Mercer County, NJ had a population of 368k people with a median age of 38.8 and a median household income of $83,306. Between 2019 and 2020 the population of Mercer County, NJ grew from 367,922 to 368,085, a 0.0443% increase and its median household income grew from $81,057 to $83,306, a 2.77% increase.
The 5 largest ethnic groups in Mercer County, NJ are White (Non-Hispanic) (48.8%), Black or African American (Non-Hispanic) (19.6%), Asian (Non-Hispanic) (11.5%), White (Hispanic) (10.9%), and Other (Hispanic) (3.91%).
None of the households in Mercer County, NJ reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
88.2% of the residents in Mercer County, NJ are U.S. citizens.
In 2020, the median property value in Mercer County, NJ was $290,100, and the homeownership rate was 63.5%. Most people in Mercer County, NJ drove alone to work, and the average commute time was 28.6 minutes. The average car ownership in Mercer County, NJ was 2 cars per household.