|Northville, New York|
|Hamlet and census-designated place|
|o Total||7.4 sq mi (19.2 km2)|
|o Land||7.4 sq mi (19.2 km2)|
|o Water||0.04 sq mi (0.1 km2)|
|o Density||180/sq mi (70/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|o Summer (DST)||EDT (UTC-4)|
Northville is a hamlet and census-designated place (CDP) in the Town of Riverhead, Suffolk County, New York, United States. The CDP population was 1,340 at the 2010 census. It was an incorporated village between 1921 and 1930.
Northville is located at (40.967635, -72.624296).
As of the census of 2000, there were 801 people, 296 households, and 224 families residing in the CDP. The population density was 108.1 per square mile (41.7/km²). There were 401 housing units at an average density of 54.1/sq mi (20.9/km²). The racial makeup of the CDP was 93.26% White, 3.87% African American, 0.12% Native American, 0.25% Asian, 0.62% Pacific Islander, 0.12% from other races, and 1.75% from two or more races. Hispanic or Latino of any race were 4.87% of the population.
There were 296 households out of which 30.7% had children under the age of 18 living with them, 65.9% were married couples living together, 6.1% had a female householder with no husband present, and 24.0% were non-families. 18.6% of all households were made up of individuals and 7.1% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 2.96.
In the CDP, the population was spread out with 22.3% under the age of 18, 4.7% from 18 to 24, 30.2% from 25 to 44, 27.6% from 45 to 64, and 15.1% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 108.6 males. For every 100 females age 18 and over, there were 108.7 males.
The median income for a household in the CDP was $57,188, and the median income for a family was $68,571. Males had a median income of $42,500 versus $40,294 for females. The per capita income for the CDP was $28,547. None of the families and 2.6% of the population were living below the poverty line, including no under eighteens and none of those over 64.