The Blues skipper scored their second goal as they overcame Southampton 3-1 on Sunday, and the former England captain expressed how happy he was to reach the milestone.
"It's a very significant achievement," Terry told Sky Sports News.
"It's a huge achievement for me, to maintain [my form] at a top club like Chelsea makes me really proud.
"I'm thankful to the fans and the club for sticking by me, hopefully there's many more to come this season and maybe next."
Terry's contract is up at the end of the season and he is yet to sign a new deal.