16 out of the top 20 French communes by household incomes are in the Parisian suburbs [0]. Generally, the western suburbs are richer, as well as the ones directly next to Paris.

[0] https://fr.wikipedia.org/wiki/Revenu_fiscal_par_m%C3%A9nage_...

The list is too long. But for example, Rueil-Malmaison is a good suburb.

what, so you can migrate there?! non non non mon dieu!