Palm City is a census-designated place (CDP) in Martin County, Florida, United States. The population was 23,120 at the 2010 census. It is part of the Port St. Lucie Metropolitan Statistical Area.
According to the United States Census Bureau, the CDP has a total area of 16.6 square miles (43 km2), of which 14.6 square miles (38 km2) is land and 2.0 square miles (5.2 km2) (11.76%) is water. Palm City is located 97 miles (156 km) north of Miami.
As of the census of 2000, there were 20,097 people, 8,458 households, and 6,301 families residing in the CDP. The population density was 1,373.4 people per square mile (530.4/km2). There were 9,228 housing units at an average density of 630.6/sq mi (243.5/km2). The racial makeup of the CDP was 96.56% White, 1.08% African American, 0.13% Native American, 1.03% Asian, 0.40% from other races, and 0.79% from two or more races. Hispanic or Latino of any race were 2.77% of the population.