Westbrook is a town in Middlesex County, Connecticut, United States. The population was 6,769 at the 2020 census. The town center is classified by the U.S. Census Bureau as a census-designated place (CDP). Geography Westbrook lies in the shoreline area of the state. The town is bordered by the towns of Essex, Clinton, Deep River, and Old Saybrook, where the Connecticut River empties into Long Island Sound. The Salt Meadow Unit of the Stewart B. McKinney National Wildlife Refuge is located in town. According to the United States Census Bureau, the town has a total area of , of which, is land and (26.47%) is water. The Westbrook Center CDP has a total area of of which 22.33% is water. Westbrook encompasses three islands in Long Island Sound, all of which are uninhabited. Salt Island is the easternmost and smallest, at approximately 0.9 acres. Menunketesuck Island, which is the largest of Westbrook's islands at approximately 4.6 acres, extends into the Sound from the outlet of the Menunketesuck and Patchogue Rivers and is part of the Stewart B. McKinney National Wildlife Refuge. Further west is Duck Island, measuring approximately 3.6 acres. Private beach Associations in the town are: Chapman Beach, Coral Sands, Grove Beach Point, Grove Beach Terrace, Horse Hill, Island View, Kelsey Point, Little Stannard, Middle Beach, Pilot's Point, Pointina, Quotonset Beach, Sagamore Terrace, Salt Works, Stannard Beach, West Beach. History Westbrook was incorporated in 1840. Demographics At the 2000 census there were 6,292 people, 2,605 households, and 1,693 families living in the town. The population density was . There were 3,460 housing units at an average density of . The racial makeup of the town was 95.76% White, 0.70% African American, 0.13% Native American, 1.56% Asian, 0.11% Pacific Islander, 0.72% from other races, and 1.03% from two or more races. Hispanic or Latino of any race were 2.51%. Of the 2,605 households 26.5% had children under the age of 18 living with them, 54.1% were married couples living together, 7.8% had a female householder with no husband present, and 35.0% were non-families. 28.0% of households were one person and 12.7% were one person aged 65 or older. The average household size was 2.39 and the average family size was 2.93. The age distribution was 21.8% under the age of 18, 5.2% from 18 to 24, 29.2% from 25 to 44, 26.7% from 45 to 64, and 17.1% 65 or