He becomes just the 32nd player to score 100 goals in the competition, 82 of which have been scored for City, with the other 18 coming during his time at Liverpool.
He is the eighth youngest player to reach a Premier League century at 27 years and three days.
Sterling joined City in the summer of 2015 and has since gone on to win three Premier League titles, one FA Cup and five league Cups.
The 27-year-old is also a star on the international stage. He was named in the Euro 2020 Team of the Tournament after leading England to their first major final for 55 years in the summer.
He has now played 72 times for England, scoring 18 goals.
Everyone at City would like to congratulate Raheem on reaching such a significant milestone.