The show originates from the studios of Newark-licensed WHTZ in New York City, a Top 40 outlet branded as "Z100".

The show is also syndicated through Premiere Radio Networks in over 80 markets such as Philadelphia, Miami, Cleveland, and Richmond, Virginia.

The popular "morning zoo" format began in 1981 at WRBQ-FM of Tampa, after which it was brought to WHTZ in 1983 by concept co-originator Scott Shannon.

The format was widely employed, even being implemented at WHTZ's sister station in Cleveland, rock-formatted WMMS.

The show began national syndication on May 22, 2006, starting with WHYI-FM Fort Lauderdale/Miami, then WIOQ Philadelphia on July 22, 2008, and WAKS Cleveland on August 25, 2008, with approximately 75 stations[2] now carrying the show after Clear Channel's Premiere Radio Networks began to offer the program nationally in March 2009.