The Reds ended their three-decade wait for the English top-flight crown, with Henderson raising the Premier League trophy aloft in July.
And in his final column of 2020 for the matchday programme, the captain expressed his gratitude to those who delivered the support that made the achievement possible.
The No.14 writes: "With this being our last home game of the year, I want to finish off by looking back on a remarkable 12 months and offer my own very simple Christmas message to our supporters.
"To each and every one of you, I want to say thank you. We have been fortunate enough to be successful and even though you were not always able to be in the ground, your contribution has been immense.
"We didn't just win the league title for our fans, we won it because of them and I hope those of you who celebrate Christmas, and also those of you who don't, are able to find an opportunity to toast the role that you played in our success.
"I know I'll be doing that, with a soft drink rather than anything stronger, and when I do I will raise a glass to Liverpool supporters for inspiring us every step of the way.
"Today's game against West Brom is another tough one, especially with Sam Allardyce having taken over so recently, but hopefully we can end the Anfield year in a positive fashion.
"We have done a lot of things right over the last 12 months, but we have to keep that going if we want the awards and accolades to continue."