The twentieth season of the American animated sitcom South Park premiered on Comedy Central on September 14, 2016 and ended on December 7, 2016, containing ten episodes. As with most seasons of the show, all episodes are written and directed by series co-creator and co-star Trey Parker. Like the previous two seasons, this season features an episode-to-episode continuity, but unlike the previous two, the continuity is more linear, as if the whole season is one story arc. This season featured recurring themes focusing on Internet trolls, nostalgia, and the 2016 United States presidential election. This season also had planned "dark weeks", weeks where no new episodes would air, which has been done since the 19th season. These were after episode three, episode six, and episode eight.

The nineteenth season of the American animated sitcom South Park premiered on Comedy Central on September 16, 2015, and ended on December 9, 2015, containing ten episodes. As with most seasons of the show, all episodes are written and directed by series co-creator and co-star Trey Parker. The Blu-Ray and DVD sets were released exclusively to Best Buy on August 16, 2016, and were available worldwide on September 6. Much like the previous season, this season features an episode-to-episode continuity, with political correctness as a recurring theme. This season introduced PC Principal as a new major character, replacing South Park Elementary's previous principal, Principal Victoria. This season featured planned "dark weeks", weeks where no new episodes aired. These were after episode three, episode six, and episode eight.

Four caroling children meet Jesus and Santa Claus and learn the true meaning of Christmas. A heart warming tale of four children trying to decide which to cheer for: Jesus, or Santa. It almost makes one wonder what Brian Boitano would do in this situation. In the end, though, they decide that Christmas isn't a time for settling old scores, Christmas is about one thing: presents.

Four children, all but one of whom go unnamed, build a snowman which comes to life and threatens their town. Kenny, the only child whose name is given in the film, and who resembles the character called Cartman in the subsequent Spirit of Christmas, The (1995) and "South Park" (1997), is immediately killed by the monster. When the children go to Santa for help, he is revealed to be the monster in disguise, and slaughters another of the kids. The two survivors approach the baby Jesus, who takes on the evil snowman and wins, saving Christmas.

The eighteenth season of the American animated sitcom South Park premiered on Comedy Central on September 24, 2014 with "Go Fund Yourself", and ended with "#HappyHolograms" on December 10, 2014, with a total of ten episodes. The season featured serial elements and recurring story lines, which The A.V. Club noted as an experimentation with episode-to-episode continuity, in which the episodes "explore the consequences of the boys' actions [week to week], allowing the plots to be motivated in part by their attempts to dig themselves out of a hole". As for most seasons of the show, all episodes of season 18 were written and directed by the series co-creator and co-star Trey Parker.

The seventeenth season of the animated television series South Park premiered on Comedy Central on September 25, 2013 and ended on December 11, 2013. The season consists of 10 episodes, as series creators Trey Parker and Matt Stone decided to scale back and have one uninterrupted season, as opposed to two 7-episode runs, as had been the format since season 7. Aside from Parker, who wrote and directed all episodes, this season employed additional writers, one of whom is former Saturday Night Live cast member Bill Hader, who began working full-time on the show. Due to a power outage at the studio, episode 4 ("Goth Kids 3: Dawn of the Posers") missed the deadline and aired a week later than scheduled.

The sixteenth season of the American animated sitcom South Park began airing on Comedy Central on March 14, 2012 and ended on November 7, 2012. It was also the final season to have 14 episodes. Parker was also the director and writer for all episodes.

The fifteenth season of the American animated sitcom South Park began airing on Comedy Central on April 27, 2011 and ended on November 16, 2011. In response to reactions to the mid-season finale episode "You're Getting Old", which seemed to insinuate that creators Trey Parker and Matt Stone were wrapping up the series, Comedy Central proclaimed through the media that South Park was renewed for two more seasons, and the duo were signed through 2013. Shortly before the airing of the season finale episode "The Poor Kid", South Park was extended again until 2016, taking the show to 20 seasons. Parker was the director and writer for all episodes, and Robert Lopez was the writer in this eleventh episode for the fifteenth season.

The fourteenth season of the American animated sitcom South Park began airing in the United States on Comedy Central between March 17, 2010 and November 17, 2010. The season was headed by the series creators Trey Parker and Matt Stone, who served as executive producers along with Anne Garefino. The season continued to focus on the exploits of protagonists Stan, Kyle, Cartman and Kenny in the fictional Colorado mountain town of South Park.

The thirteenth season of South Park, an American animated television comedy series, originally aired in the United States on Comedy Central between March 11 and November 18, 2009. The season was headed by the series creators Trey Parker and Matt Stone, who served as executive producers along with Anne Garefino. The season continued to focus on the exploits of protagonists Stan, Kyle, Cartman, Kenny and Butters in the fictional Colorado mountain town of South Park.