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. The population is 19,540.Sunny Isles Beach is an area of cultural diversity with stores lining Collins Avenue, the main thoroughfare through the city. The city is sometimes referred to as Little Moscow because of its many Russian and Russian-descended (Russian American) residents, many of whom are Russian Jews.It is a growing Sunny Isles Beach has a central location, minutes from Bal Harbour to the south, and Aventura to the north.Sunny Isles Beach was also the 2008 site of MTV's annual "Spring Break" celebration, with headquarters at the local Newport Beachside Resort.