In 2019, Union County, NJ had a population of 556k people with a median age of 39 and a median household income of $80,339. Between 2018 and 2019 the population of Union County, NJ declined from 558,067 to 556,341, a −0.309% decrease and its median household income declined from $82,186 to $80,339, a −2.25% decrease.
The 5 largest ethnic groups in Union County, NJ are White (Non-Hispanic) (37.8%), Black or African American (Non-Hispanic) (19.9%), Other (Hispanic) (17.4%), White (Hispanic) (12.4%), and Asian (Non-Hispanic) (5.3%). 46% of the households in Union County, NJ speak a non-English language at home as their primary language, and 85.5% of the residents in Union County, NJ are U.S. citizens.
In 2019, the median property value in Union County, NJ was $380,100, and the homeownership rate was 57.9%. Most people in Union County, NJ drove alone to work, and the average commute time was 31 minutes. The average car ownership in Union County, NJ was 2 cars per household.