Lake Worth Lagoon. The main barrier landmasses are split by four inlets: the Jupiter Inlet, the Lake Worth Inlet, the South Lake Worth Inlet, and the Boca Raton Inlet. Two of the four inlets are natural, but significantly altered – the Jupiter and Boca Raton inlets – while the Lake Worth and South Lake Worth inlets are man-made, with the former dug in the 1890s and the latter created between 1926 and 1927. Several other islands exist within the Intracoastal Waterway, including Hypoluxo Island, Munyon Island, and Peanut Island. Natural areas Arthur R. Marshall Loxahatchee National Wildlife Refuge, a refuge in Boynton Beach DuPuis Management Area, a area of protected lands John D. MacArthur Beach State Park, a park in North Palm Beach, Florida J.W. Corbett Wildlife Management Area, a area of protected lands Jupiter Ridge Natural Area, a preserve in Jupiter, Florida Juno Dunes Natural Area, a preserve in Juno Beach Frenchman's Forest Natural Area, a preserve in Palm Beach Gardens Sweetbay Natural Area, a preserve in Palm Beach Gardens Royal Palm Beach Pines Natural Area, a preserve in Royal Palm Beach. Hypoluxo Scrub Natural Area, a preserve in Hypoluxo Rosemary Scrub Natural Area, a preserve in Boynton Beach Seacrest Scrub Natural Area, a preserve in Boynton Beach Delray Oaks Natural Area a prairie and xeric hammock preserve with a small strand swamp and areas of flatwoods in Delray Beach Leon M. Weekes Environmental Preserve, a preserve in Delray Beach Grassy Waters Everglades Preserve, a wetland in West Palm Beach, Florida In addition, the county has an abundance of coral reef patches along its coastline and has made efforts to preserve them. Demographics 2020 census As of the 2020 United States census, there were 1,492,191 people, 568,915 households, and 354,512 families residing in the county. 2010 census Of 664,594 households, 24.35% had children under the age of 18 living with them, 46.28% were married couples living together, 11.68% had a female householder with no husband present, and 37.40% were not families. Around 30.11% of all households were made up of individuals, and 14.70% (4.02% male and 10.68% female) had someone living alone who was 65 years of age or older. The average household size was 2.39 and the average family size was 2.97. The age distribution was 20.4% under the age of 18, 8.0% from 18 to 24, 23.7% from 25 to 44, 26.4% from 45 to 64, and