Juno Beach is a town in Palm Beach County, Florida, United States. The population was 3,262 at the 2000 census. As of 2004, the population recorded by the U.S. Census Bureau is 3,391. Juno Beach is home to the headquarters of Florida Power & Light. It was also the original county seat for the area that was then known as Dade County, Florida. Juno Beach was platted in 1948. The town was named after Juno, the ancient Roman goddess.