Summerhill is a residential subdivision in St. Augustine, in St. Johns County on Florida's northeast coast, where the Matanzas River and the Intracoastal Waterway run between the mainland and Anastasia Island. The community is residential in character, made up of homes in the pattern of St. Augustine's subdivisions away from the historic core, with everyday shopping and dining along the city's main commercial corridors. Public schools are part of the St. Johns County School District. The historic downtown, with its Spanish colonial streets and the Castillo de San Marcos, lies a short drive away, and the beaches of Anastasia Island and St. Augustine Beach are reached across the Bridge of Lions or the SR 312 bridge. US 1 and A1A carry traffic north toward Jacksonville and south along the coast. Browse current Summerhill homes for sale in St. Augustine below.