Deerfield Beach Deerfield Beach is a city in Broward County, Florida, United States, just south of the Palm Beach County line. The city is named for the numerous deer that once roamed the area. As of the 2020 census, the population was 86,859. Listings In Deerfield Beach [idx_listing_summary default_view="list" sort="recently_changed" link="1o9fskfdbqbb" source="location" property_sub_type=",,,,,," display="all" widget_version="2"] Subscribe Sign Up to tune in to all our Real Estate News.