The Belgian defender captained Roberto Mancini's men to their first Premier League title last season and has been rewarded by being given the longest deal in the club's history
Goal.com exclusively revealed back in March that the 26-year-old - a key figure under Roberto Mancini and scorer of the crucial winner against Manchester United towards the end of the campaign - would be offered a new long-term deal at the club.
The news also comes after it was revealed that David Silva will be offered a new deal, making him one of the club's highest earners in the process, and Kompany claimed he was delighted to be a key part of the "project" being undertaken at the Etihad Stadium.
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“For me if you are good somewhere then there is no reason to look elsewhere,” he told City's official website.
“Man City as a project is not just a project of the owners or the people employed by the club; it is also my project.
“I have been here since the beginning and I have seen everything at the club change inside and out. I have the feeling that I have contributed to it too.
“It is good to know that I can be at City for another six years. It is a compliment that the club feels so highly of me.
“Hopefully in the future I will have a bigger impact than I already have. I am good here.”
Kompany joined City in 2008 from Hamburg and become the Blues’ captain after Carlos Tevez was stripped of the honour last summer for his pleas to move away from the Etihad.
The centre-back added: “The fans have given me an incredible reception which is one of the main reasons that I signed this new deal.
“I take it with great pride that I have been chosen to be captain and lead this team. Especially in England, more than other competitions, being the captain has got a lot more responsibility involved with it.
“I thrive on responsibility the more I get the more I perform; I am at the right club because I have built something here already.
“I have never denied that this can sometimes be the hardest team in the league of which to be captain; but like I said I am all about responsibility and challenge.
“This Man City project was probably one of the most difficult projects in Europe to be part of and so far we have all done a gone job even though a lot of people said it [success] wasn’t going to happen so quickly.
“I like the kind of characters that we have in our team; I like the challenges we have ahead of us.”
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City secured last season’s Premier League trophy by scoring twice in the last few minutes of their final match at home to QPR to come from 2-1 behind to dramatically leapfrog Manchester United in the table on goal difference, a match that thrilled Kompany.
“Our title win was amazing and one of the best feelings ever for us and the fans,” the Belgium international continued.
“That last game against QPR will be a very special part of City’s history for the next 50 or 100 years but now is the time to look forward."
The City captain also took to Twitter to reveal his delight at the deal, adding: "Very pleased and honored to announce my new 6 year contract with MCFC! I am good here, best fans in the world! Ready for much more trophies!"