Mercer County, NJ has a population of 371,023 people with a median age of 38.5 and a median household income of $77,650. Between 2015 and 2016 the population of Mercer County, NJ declined from 371,398 to 371,023, a 0.1% decrease and its median household income grew from $72,417 to $77,650, a 7.23% increase.
The population of Mercer County, NJ is 50.3% White, 19.7% Black, and 17.1% Hispanic. 29.9% of the people in Mercer County, NJ speak a non-English language, and 88.5% are U.S. citizens.
The largest universities in Mercer County, NJ are Thomas Edison State College, with 3,324 graduates, Princeton University, with 2,167 graduates, and The College of New Jersey, with 2,139 graduates.
The median property value in Mercer County, NJ is $284,600, and the homeownership rate is 63%. Most people in Mercer County, NJ commute by Drove Alone, and the average commute time is 27.2 minutes. The average car ownership in Mercer County, NJ is 2 cars per household.
Mercer County, NJ is the 12th most populated county in New Jersey and borders Burlington County, NJ; Hunterdon County, NJ; Middlesex County, NJ; Monmouth County, NJ; Somerset County, NJ; and Bucks County, PA& 1 more.