Terra Mar was a census-designated place (CDP) in Broward County, Florida, United States. The population was 2,631 at the 2000 census. Most of the neighborhood belongs to Lauderdale-by-the-Sea, Florida with a small portion belonging to Pompano Beach, Florida.GeographyTerra Mar is located at .According to the United States Census Bureau, the CDP has a total area of 1.0 km², all land.DemographicsAs of the census of 2000, there were 2,631 people, 1,570 households, and 766 families residing in the CDP. The population density was 2,745.5/km² (7,054.3/mi²). There were 2,712 housing units at an average density of 2,830.0/km² (7,271.4/mi²). The racial makeup of the CDP was 97.87% White (93.5% were Non-Hispanic White,) 0.57% African American, 0.19% Asian, 0.57% from other races, and 0.80% from two or more races. Hispanic or Latino of any race were 5.06% of the population.There were 1,570 households out of which 5.3% had children under the age of 18 living with them, 42.8% were married couples living together, 4.1% had a female householder with no husband present, and 51.2% were non-families. 44.6% of all households were made up of individuals and 22.5% had someone living alone who was 65 years of age or older. The average household size was 1.68 and the average family size was 2.23.