A couronne périurbaine, a statistical area devised by the French INSEE demographic statistics institution, describes a commuter belt area around an area of dense habitation (or unité urbaine to use the same institution's terminology).

Based on France's commune system (interlocking administrative subdivisions often comparable to counties), a commune is considered part of a couronne périurbaine when

1. it is not densely-constructed enough or is too isolated to be part of any unité urbaine (or "pôle urbain" if it is the core of the agglomeration), and
2. at least 40% of its population commutes to workplaces in a unité urbaine or pôle urbain, or to another commune connected to a unité urbaine through the same criteria.

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