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The part of Wales where Howl comes from would appear to be one of the small towns in the South Wales valleys. The way he and especially his sister speak indicate they are in the South and Howl says (sarcastically) "there's a welcome in the valleys". The town is described as extremely hilly and seeming like a suburb attached to a much larger town. It seems to be a pretty close-knit community, however, with everyone knowing each other's business. The impression is given that this is Howl's hometown and he grew up pretty near to where his sister now lives. He visits quite regularly, enough to be a familiar figure in the area.