Pep Guardiola's side put themselves on the brink of title glory with Saturday's 3-1 victory at Tottenham and Manchester United's failure to take points off West Brom on Sunday left City beyond mathematical reach.
The result leaves City 16 points clear at the top with five games remaining on a total of 87 - the most United can now reach is 86.
By completing the job after 33 games, City have emulated the achievement of United, who secured the crown with the same number of matches to spare in 2001.
In the tune of 'If you're happy and you know it (!?)' Man City's official partner produced a video featuring City players and fans celebrating their title win.
Manchester City captain Vincent Kompany on Sky Sports: We were consistent the whole season and were able to play at the level we were expected to perform at. But a frantic pre-season transfer window turbo-charged the team and City out-passed and out-scored everyone else.
"It's more complicated. But I think for the club, not just the players, all the departments in the club can believe".
"This one differs in the fact we were consistent the whole season, we played at the level we wanted to and a few times we won it before we almost threw it away".More news: Giroud double keeps Chelsea in Champions League hunt
"I had a feeling when I woke up this morning but it's a different experience when you're waiting for a team to lose".
While it may be premature to place City in that rarified air, they could make a case by breaking the Premier League points record of 95 set by Chelsea in 2004-05.
West Brom had lost eight of their previous nine games and last won on January 13.
"We are able to win two games".
We're seeing a packed out Etihad Stadium (for the first time ever), along with streets and pubs lined with City fans.
"The moment he can (improve) his average chances to score a goal, he will become one of the best players in the world", Guardiola said after the Saturday evening kick-off.
It is the team's first league title since 2014.
Guardiola also praised his young players - with Leroy Sane, Raheem Sterling and Gabriel Jesus scoring crucial goals - and he believes they will learn from their Champions League disappointment. "The Premier League is the constant - every day, every day, every day - and we were there every day".