North Valley Stream is a census-designated place (CDP) in the village of Valley Stream in Nassau County, New York. The population was 16,628 at the 2010 census. North Valley Stream is part of the Town of Hempstead and is represented by 3rd District Council Member, Councilman Bruce Blakeman.
North Valley Stream is located at 40°40′59″N 73°42′34″W.
According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.9 km2), all land.
As of the census of 2000, there were 15,789 people, 4,860 households, and 3,946 families residing in the CDP. The population density was 8,382.9 per square mile (3,242.6/km2). There were 4,951 housing units at an average density of 2,628.7/sq mi (1,016.8/km2). The racial makeup of the CDP was 44.73% White, 37.08% African American, 0.27% Native American, 9.03% Asian, 0.06% Pacific Islander, 4.69% from other races, and 4.14% from two or more races. Hispanic or Latino of any race were 10.82% of the population.
There were 4,860 households, out of which 39.6% had children under the age of 18 living with them, 61.9% were married couples living together, 14.9% had a female householder with no husband present, and 18.8% were non-families. 16.1% of all households were made up of individuals, and 8.5% had someone living alone who was 65 years of age or older.