In 2020, Nassau County, NY had a population of 1.36M people with a median age of 41.9 and a median household income of $120,036. Between 2019 and 2020 the population of Nassau County, NY declined from 1.36M to 1.36M, a −0.0609% decrease and its median household income grew from $116,100 to $120,036, a 3.39% increase.
The 5 largest ethnic groups in Nassau County, NY are White (Non-Hispanic) (59%), Black or African American (Non-Hispanic) (11.1%), Asian (Non-Hispanic) (10.2%), White (Hispanic) (7.33%), and Other (Hispanic) (6.47%).
None of the households in Nassau County, NY 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.
92.7% of the residents in Nassau County, NY are U.S. citizens.
In 2020, the median property value in Nassau County, NY was $524,400, and the homeownership rate was 81.1%. Most people in Nassau County, NY drove alone to work, and the average commute time was 36.6 minutes. The average car ownership in Nassau County, NY was 2 cars per household.