JosepSunny Isles Beach (SIB, officially City of Sunny Isles Beach) is a city located on a barrier island in northeast Miami-Dade County, Florida, United States. The City is bounded by the Atlantic Ocean on the east and the Intracoastal Waterway on the west. As of 2010, the population is 20,832. Sunny Isles Beach is nicknamed “Little Moscow” due to its large and growing Russian and Russian Jewish population. Sunny Isles Beach is an area of cultural diversity with stores lining Collins Avenue, the main thoroughfare through the city.