How to read Poissy density?

High density reflects a mature commercial fabric, not necessarily saturated. Compare to national median (~50-80 etabs/1000 inhabitants urban) and look at creation dynamics (SIRENE 12m).

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 immobilières (68.20A)	735
Activités immobilières (68.20B)	577
Activités de poste et courrier (53.20Z)	394
Sièges sociaux, conseil de gestion (70.22Z)	346
Activités associatives (94.99Z)	249
Programmation informatique (62.02A)	212
Transports terrestres (49.32Z)	184
Autres services personnels (96.09Z)	146
Programmation informatique (62.01Z)	131
Sièges sociaux, conseil de gestion (70.10Z)	130
Services aux bâtiments et paysagers (81.21Z)	122
Commerce de détail (47.99A)	120

Most represented business

Activités immobilières (68.20A) (735 establishments)

Global retail density

194 establishments per 1000 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 (regulation for rural towns), 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.

Assess your place in the Poissy market?

We point you to an adviser who validates your positioning before you launch. Tell us about your project.

FAQ

How to read Poissy density?: High density reflects a mature commercial fabric, not necessarily saturated. Compare to national median (~50-80 etabs/1000 inhabitants urban) and look at creation dynamics (SIRENE 12m).
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.