In 2018, Nassau County, NY had a population of 1.36M people with a median age of 41.7 and a median household income of $116,304. Between 2017 and 2018 the population of Nassau County, NY declined from 1.37M to 1.36M, a -0.816% decrease and its median household income grew from $108,133 to $116,304, a 7.56% increase.
The 5 largest ethnic groups in Nassau County, NY are White (Non-Hispanic) (59%), Black or African American (Non-Hispanic) (11.4%), Asian (Non-Hispanic) (9.92%), White (Hispanic) (8.66%), and Other (Hispanic) (6.5%). 29.3% of the households in Nassau County, NY speak a non-English language at home as their primary language, and 92.4% of the residents in Nassau County, NY are U.S. citizens.
In 2018, the median property value in Nassau County, NY was $517,500, and the homeownership rate was 79.8%. Most people in Nassau County, NY drove alone to work, and the average commute time was 35.8 minutes. The average car ownership in Nassau County, NY was 2 cars per household.