The 24-year-old Republic of Ireland international has signed a new long-term deal with the Toffees, committing himself to the Merseyside club until the summer of 2018
The Republic of Ireland international joined Everton from Sligo Rovers back in 2009 and has made 67 appearances for David Moyes' men since, scoring four goals.
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"I'm over the moon. I'm glad to get it all done and to sign for so long at a Club like Everton is a great achievement - I want to be here for as long as possible," Coleman told the club's official website.
"Signing a contract here is fantastic and I'm really looking forward to the next couple of years.
"I'm going to keep working as hard as I have done since day one and keep improving every day in training to impress the manager. I'm really happy to have signed for the length of time that I have."