New York City was organized under the Charter of Greater New York in 1897. See related link below: http://www.nyc.gov/html/nyc100/html/classroom/hist_info/100aniv.html
The Town of Greenburgh, New York is organized as a Town under New York State Town Law. It is not a City.
In the 1920s, the head of the organized crime family in New York was Salvatore Maranzano. He played a significant role in the establishment of the Five Families that would come to dominate the New York City Mafia scene.
Virginia
in Malaysia
A Buffalo New York organized crime family. http://en.wikipedia.org/wiki/Stefano_Magaddino
The first New York City Marathon was held in 1970, organized by New York Road Runners Club president Fred Lebow but has been going on every year since 1979
Perhaps better organized then crime in small town USA.
The New York Knickerbockers baseball team was formed in 1846. The New York Knickerbockers were one of the first organized baseball teams and wore their very first recorded baseball uniforms in 1849.
Cheap Jack's Vintage Clothing‎ is a large one that is well organized. They are at 303 5th Avenue, New York, NY‎ - (212) 777-9564‎
Elizabeth Cady Stanton and Lucretia Mott organized a meeting in Seneca Falls, New York in 1848.
The first Women's Day was organized by the Socialist Party of America in 1909 to honor the garment workers' strike in New York.