How to read Poissy density?

The SIRENE count covers every declared activity — shops, but also property companies, holdings and sole traders — so it runs high by nature. To gauge saturation, look at the per-business breakdown below and the creation / closure dynamics (BODACC).

Why not indicate "saturated / not saturated"?

No universal ratio allows a verdict. Saturation depends on business, district, purchasing power (Filosofi income), and recent dynamics. NTYB gives the numbers, you keep the reading.

When does the per-inhabitant ratio not make sense?

For destination retail (car dealer, specialty store) which captures a catchment area larger than the town. Then catchment (vertical /chalandise/) is relevant.

Market saturation in Poissy (78300)

Active business count by trade in Poissy, retail density, top concentrated businesses. To measure the market BEFORE launching — not validate it after.

Population (INSEE)

40 983 inhabitants

Distinct active businesses

374 NAF codes represented

See all trades

Trade	Businesses
Activités de poste et courrier (53.20Z)	394
Programmation informatique (62.02A)	212
Transports terrestres (49.32Z)	184
Autres services personnels (96.09Z)	146
Programmation informatique (62.01Z)	131
Services aux bâtiments et paysagers (81.21Z)	122
Commerce de détail (47.99A)	120

Most represented business

Activités de poste et courrier (53.20Z) (394 establishments)

Establishment density (all activities)

194 active establishments per 1,000 inhabitants

"Business / inhabitant" ratio method

The pop/nb_etabs ratio per business is the most used saturation indicator. Common benchmarks: 1 bakery / 2 000 inhabitants (Observatoire Franchise), 1 pharmacy / 2 500 inhabitants (national first-licence quota, art. L.5125-4 CSP), 1 hairdresser / 750 inhabitants. Beyond the raw ratio, look at dynamics (creations / cessions BODACC).

Reading the ratios

Above the trade's benchmark: contested market. Below: room to take. Check the trend with openings and closures over the last 24 months.

Market-positioning support in Poissy?

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FAQ

How to read Poissy density?: The SIRENE count covers every declared activity — shops, but also property companies, holdings and sole traders — so it runs high by nature. To gauge saturation, look at the per-business breakdown below and the creation / closure dynamics (BODACC).
Why not indicate "saturated / not saturated"?: No universal ratio allows a verdict. Saturation depends on business, district, purchasing power (Filosofi income), and recent dynamics. NTYB gives the numbers, you keep the reading.
When does the per-inhabitant ratio not make sense?: For destination retail (car dealer, specialty store) which captures a catchment area larger than the town. Then catchment (vertical /chalandise/) is relevant.