At the top of the ranking, Persian continues its fine dynamic. With 13,788 inhabitants, it remains the most populous municipality in the Oise valley, up 2.5% compared to last year and 15% since 2013 (11,900 inhabitants).
The city of Haut Val-d’Oise remains the most attractive, particularly for workers in the inner suburbs of Paris, attracted by the presence of a train station connected to Paris, a living environment and still affordable property prices.
L’Isle-Adam and Chambly are no longer gaining weight
Behind Persan, L’Isle-Adam remains stable (+ 0.6% in one year) with 12,279 souls just like Chambly (-0.2% and 10,280 inhabitants). This underlying trend has been observed for several years.
However, with the creation of the L’Isle-Adam marina district and the 2020 confinement which saw the exodus of part of Parisians to the outer suburbs, the number of inhabitants of these two municipalities is expected to increase. again in the next two years.
Two other towns remain stuck below the 10,000 inhabitants mark: Méry-sur-Oise and Beaumont-sur-Oise with respectively 9,962 Mérysiens (-0.3% compared to last year) and 9,607 Beaumontois (-0 , 5%). At Beaumont, the trend remains slightly downward.
For six years, the town has lost 135 inhabitants. Last year, Jean-Michel Aparicio, the mayor (Dvg) of Beaumont-sur-Oise, was counting on new constructions to pass the 10,000 mark this year. We will have to wait a little longer …
After falling below the 7,000 inhabitants mark in 2021 (2018 figure), Auvers-sur-Oise is experiencing a slow erosion of its population and now has 6,915 souls (-0.7%).
Elsewhere, stability is still required in Parmain (5,701 inhabitants, + 0.25%), Mériel (5,221 inhabitants, + 0.8%), Champagne-sur-Oise (5,060 inhabitants, -0.12%) and Bruyères-sur-Oise (4,381 inhabitants, + 0.48%).
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