 At that time, Dade County covered more territory than it does today, stretching from Bahia Honda Key, in the middle Keys, up to the St. Lucie River, near present-day Port St. Lucie.Juno was chosen as the "county seat" because of its strategic location at the southern terminus of the Jupiter-Juno railroad.Juno also held the northern terminus of the boat and connecting stagecoach line to Miami.