Residential districts outside the towns (8)

I believe the answer is:

suburbia

(Other definitions for suburbia that I've seen before include "Outer city regions" , "Residential districts on the outskirts of a city" , "Residential area away from city centre" , "Residential district on a city's outskirts" , "Pet Shop Boys song" .)

I've seen this clue in the Sydney Morning Herald.

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