Boynton Beach is a city in Palm Beach County, Florida, United States. It is situated about 57 miles (92 km) north of Miami. The 2020 census recorded a population of 80,380. Boynton Beach is located in the Miami metropolitan area, which was home to 6,138,333 people at the 2020 census. The city is named after Nathan Boynton, a Civil War major and Michigan politician who became one of the first settlers in the area in 1895. Boynton Beach is located north of Delray Beach, south of Hypoluxo and Lantana, and east of Golf, while the municipalities of Briny Breezes, Gulf Stream, Manalapan, and Ocean Ridge are situated to the east across the Intracoastal Waterway.

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.