Leicester secured an incredible first Premier League title without playing after second-place Tottenham drew 2-2 at Chelsea in one of the biggest-ever triumphs by an underdog in sports.
Leicester was playing in the second tier only two years ago, came close to be relegated again last year and started this season as 5000-1 outsiders for the title.
"It's the best feeling of my career and I couldn't be prouder that it's as part of this team. Everyone's worked so hard for this, nobody believed we could do it, but here we are, Premier League champions and deservedly so," captain Wes Morgan told the club website.
Now for the first time in their 132-year history Leicester is champion of England after establishing an insurmountable seven-point lead over Tottenham with two games remaining.
The Foxes missed a chance to seal the title on Sunday when they were held by Manchester United but deposed champion Chelsea ensured the party wasn't delayed any longer.
Some Leicester players were gathered at the house of 22-goal top scorer Jamie Vardy as Tottenham was playing Chelsea, and defender Christian Fuchs tweeted a video of players celebrating.
Leicester will collect the trophy on Saturday when it hosts Everton at the King Power Stadium.
English soccer has not had a maiden champion of the top flight since Nottingham Forest in 1978.
And for the last 20 years the Premier League trophy has never left London or Manchester, with Arsenal, Chelsea, United and City sharing the trophy between them.
Unlike that title-winning quartet or 1995 champion Blackburn, Leicester has achieved its success without lavish spending on its squad.
Chelsea's draw also ensured Leicester manager Claudio Ranieri became a league title winner for the first time in his career, 12 years after the 64-year-old Italian was fired by the Blues.