Gangs in the United States include several types of groups, including national street gangs, local street gangs, prison gangs, motorcycle clubs, and ethnic and organized crime gangs. Approximately 1.4 million people were part of gangs as of 2011, and more than 33,000 gangs were active in the United States. Many American gangs began, and still exist, in urban areas. In many cases, national street gangs originated in major cities such as New York City and Chicago but they later grew in other American cities like Albuquerque and Washington, D.C.