This wiki contains spoilers for all stories of Critical Role. This includes the story for unaired episodes of The Legend of Vox Machina, as it's based on the first campaign of Critical Role from 2015-2017.
As of 812 PD, Turst Fields had a population of 1,390, notably including a significant number of gnolls as citizens (15%). The rest of the population was made up of humans (40%), halflings (38%), and other races (8%).
Early in Turst Fields' history, the townsfolk made an alliance with the Dustpaw tribe of gnolls, who helped defend the community from the Ravagers.
When the Briarwoods were ruling over Whitestone between 805 and 810 PD, the farmers of Turst Fields still traded with the city, but they were not allowed into it and there wasn't much communication.