St. Lucie County is the fastest-growing part of Florida's Treasure Coast, anchored by Port St. Lucie — one of Florida's largest and fastest-growing cities — and the historic county seat of Fort Pierce. Within Port St. Lucie you'll find master-planned communities like Tradition, PGA Village, and St. Lucie West, each with its own price tier and buyer profile. The county is known for relative affordability compared to South Florida, steady new construction, strong family appeal, top schools, and a deep pool of relocating and first-time buyers. For sellers, that means active demand — but also more inventory and more new-construction competition than other Treasure Coast counties. The best way to plan a sale here is to start with a free written CMA from licensed Florida agent Dash Hernandez (FL SL3605300, Realty Hub).