Center Moriches ( (listen) moh-RITCH-iz) is a hamlet (and census-designated place) in Suffolk County, New York, United States. The population was 7,580 at the 2010 census. Center Moriches is in the town of Brookhaven. It is the location of the historic Masury Estate Ballroom and Terry-Ketcham Inn, both listed on the National Register of Historic Places.
The name Moriches comes from Meritces, a Native American who owned land on Moriches Neck.
Center Moriches is located at 40°47′52″N 72°47′50″W (40.797772, -72.797192).
According to the United States Census Bureau, the CDP has a total area of 5.6 square miles (14.6 km2), of which 5.2 square miles (13.5 km2) is land and 0.42 square miles (1.1 km2), or 7.36%, is water.
As of the census of 2000, there were 6,655 people, 2,319 households, and 1,776 families residing in the CDP. The population density was 1,327.2 per square mile (512.9/km2). There were 2,465 housing units at an average density of 491.6/sq mi (190.0/km2). The racial makeup of the CDP was 90.02% White, 5.24% African American, 0.17% Native American, 0.99% Asian, 1.29% from other races, and 2.28% from two or more races. Hispanic or Latino of any race were 6.61% of the population.
There were 2,319 households, out of which 36.2% had children under the age of 18 living with them, 62.7% were married couples living together, 9.4% had a female householder with no husband present, and 23.4% were non-families. 17.4% of all households were made up of individuals, and 6.8% had someone living alone who was 65 years of age or older. The average household size was 2.83 and the average family size was 3.20.