Centreville, Maryland  Centreville is an incorporated town in Queen Anne's County, Maryland, United States on the Delmarva Peninsula. Incorporated in 1794, it is the county seat of Queen Anne's County. The population was 4,285 at the 2010 census. The ZIP code is 21617 and the area code is 410. The local telephone exchange is 758. It hosts the Queen Anne's County Fair each summer and was home to three franchises during the existence of the Eastern Shore Baseball League—the Colts, Red Sox, and Orioles. The book "Red Kayak" by Priscilla Cummings is set in Centreville. Centreville is located at (39.046206, −76.064345). According to the United States Census Bureau, the town has a total area of , all land. The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen climate classification system, Centreville has a humid subtropical climate, abbreviated "Cfa" on climate maps. As of the census of 2010, there were 4,285 people, 1,568 households, and 1,102 families residing in the town. The population density was . There were 1,694 housing units at an average density of . The racial makeup of the town was 85.0% White, 10.6% African American, 0.3% Native American, 1.4% Asian, 0.5% from other races, and 2.3% from two or more races. Hispanic or Latino of any race were 2.7% of the population. There were 1,568 households of which 38.0% had children under the age of 18 living with them, 55.6% were married couples living together, 11.4% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 29.7% were non-families. 25.1% of all households were made up of individuals and 10.8% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.12. The median age in the town was 39.5 years. 27.5% of residents were under the age of 18; 5.2% were between the ages of 18 and 24; 26% were from 25 to 44; 23.4% were from 45 to 64; and 17.9% were 65 years of age or older.