Palm Beach County is a county in the southeastern part of Florida, located in the Miami metropolitan area. It is Florida's third-most populous county after Miami-Dade County and Broward County and the 26th-most populous in the United States, with 1,492,191 residents as of the 2020 census. Its county seat and largest city is West Palm Beach, which had a population of 117,415 as of 2020. Named after one of its oldest settlements, Palm Beach, the county was established in 1909, after being split from Miami-Dade County. The county's modern-day boundaries were established in 1963.

The Miami metropolitan area, also known as South Florida, SoFlo, SoFla, the Gold Coast, the Tri-County Area, or Greater Miami, and officially the Miami–Fort Lauderdale–West Palm Beach Metropolitan Statistical Area, is a coastal metropolitan area in southeastern Florida. It is the ninth-largest metropolitan statistical area (MSA) in the United States, the fifth-largest metropolitan area in the Southern United States, and the largest metropolitan area in Florida. With a population of 6.18 million, its population exceeds 31 of the nation's 50 states as of 2023. It comprises the three most populated counties in the state, Miami-Dade County, Broward County, and Palm Beach County, which rank as the first, second, and third-most populous counties in the state, respectively. Miami-Dade County, with 2,701,767 people in 2020, is the seventh-most populous county in the United States.