Highland Beach Highland Beach is a town in Palm Beach County, Florida, United States. As of the 2010 census, the population was 3,539. Listings In Highland Beach [idx_listing_summary default_view="list" sort="recently_changed" link="1o9fsknv4ikn" source="location" property_sub_type=",,,,,," display="all" widget_version="2"] Subscribe Sign Up to tune in to all our Real Estate News.