When Palm Beach County was formed in 1909 from the northern portion of Dade County, Pompano was its southernmost municipality.

As can be seen from this 1910 map, Palm Beach's original boundaries went as far north as Stuart.

Also note that as well as the town of Pompano, the map included a community called West Pompano.

Map courtesy of the Florida Center for Instructional Technology, College of Education, University of South Florida.