Chatswin is a fictional upper middle class suburban town in which the series takes place. Tessa's father moved her there after finding a box of condoms in her drawer. According to the onscreen map animation displayed in the opening credits the true location of the town is in southern westchester county, an affluent suburban county north of New York City. Chatswin residents are stereotypically blonde and look "fake" according to Tessa. Residents are also known for their "suburban voices" according to Tessa, as heard by dalias voice.
Chatswin is accompanied by perfectly manicured lawns, and big houses, some manisons as Dallas Royce lives in. There is also a local country club that a lot of the characters frequent.