Port St. Lucie is a city in St. Lucie County, Florida, United States. It is the most populous municipality in the county with a population of 204,851 at the 2020 census. It is located southeast of Orlando and north of Miami. It is a principal city in the Port St. Lucie Metropolitan Statistical Area, which includes St. Lucie and Martin counties, and had an estimated population of 502,521. Port St. Lucie is also a principal city in the Miami-Fort Lauderdale-Port St. Lucie Combined Statistical Area, which had an estimated population of 6,841,100 . History The name "St. Lucie" is originally derived from the name of a settlement near Jupiter Inlet which was founded on St. Lucia's day in 1566. Due to numerous errors, the name later came to be associated with the present day town of St. Lucie Village, Florida, north of present-day Port St. Lucie. After "La Florida" and "St. Augustine," it is the oldest place name in the United States. In the early 1890s, an early pioneer settlement named Spruce Bluff was located along the St. Lucie River, which consisted of a community of several families with a school, post office, pineapple plantation, and sawmill. Currently, the land the settlement was located on is part of the Spruce Bluff Preserve. Along with an old cemetery near the old settlement, the preserve also contains a hiking area, canoe access, observation areas, and a prehistoric Ais Indian mound located on the southern end of the preserve. In the 1950s, the land that would eventually become Port St. Lucie was a largely uninhabited tract of land south of White City, composed of a fishing camp (Burt Pruitt's Fishin' Farm) along the St. Lucie River, a few farms and businesses near U.S. 1. In 1958, with a budget of $5, the General Development Corporation (GDC) purchased the River Park development and along the North Fork of the St. Lucie River. In 1959, the GDC opened its first bridge over the St. Lucie River, allowing for direct automobile access to Port St. Lucie. By February 25, 1961, there were 250 homes in the new city. GDC requested the state legislature to incorporate , along with the River Park settlement, into the City of Port St. Lucie. River Park did not incorporate into the city at the request of its residents. Port St. Lucie became a city on April 27, 1961, with the passage