Port St. Lucie sits along Florida's Treasure Coast in St. Lucie County, roughly midway between West Palm Beach and Vero Beach. The city extends from the Atlantic beaches westward through planned residential communities like Tradition and St. Lucie West, with service corridors along US-1 and Gatlin Boulevard connecting neighborhoods to shopping and medical facilities. Originally developed as a retirement destination in the 1960s, the area now supports a mix of retirees, families, and spring training operations for the New York Mets, with healthcare and retail forming the backbone of the local economy.