Copiague (pronounce /KOH payg/) is a hamlet (and census-designated place) in Suffolk County, New York, United States. The population was 21,922 at the 2000 census. Once predominantly Italian-American, today Copiague is home to a large Polish-American population. In addition there is a large number of Hispanic residents. In recent years, the Danish population of Copiague has risen greatly as well.