Le Mesnil-Saint-Denis

Yvelines · CC de la Haute Vallée de Chevreuse · INSEE 78397

A food shop, a school and somewhere to eat or drink.

Partly served 55.2/100 · confidence: high· Better served than 59 % of the {n|commune|communes} of a similar size.

Identity

Le Mesnil-Saint-Denis (INSEE 78397) is in Yvelines (78), part of CC de la Haute Vallée de Chevreuse. Population 7,276 (2023). ^[1]

INSEE density class: Centres urbains intermédiaires (level 2). ^[2]

Data vintages: INSEE BPE 2025 · INSEE SIRENE 2026-09 · INSEE census (RP) 2023 · INSEE COG 2026 · INSEE density grid 2026.

Permanent link: https://vivantrural.com/en/fr/78397-le-mesnil-saint-denis

Vitality score

Vitality score 55.2/100 — Partly served (model fr-v0.2).

Confidence: high.

Better served than 59 % of the 3,326 communes of a similar size.

Compare this with communes of a similar size. The score measures how well a place is served relative to its own size band, and larger communes score higher as a rule — so it reads meaningfully against another village, and misleadingly against a town.

Measured but not scored in this model: Market. See the methodology for why.

Component	Value (0–1)	Weight	Contribution
Daily food	0.58	25	14.49
Social	0.54	20	10.86
Education	0.39	10	3.93
Health	0.55	10	5.53
Public & culture	0.22	5	1.11
Population trend	0.61	10	6.15
Housing mix	0.96	5	4.81

Services

What is here, at a glance

Food 4 of 6

Eating out 1 of 1

Cafés and bars 1 of 1

Schools 3 of 3

Health 2 of 4

Public services 1 of 1

Culture 1 of 2

Sport 1 of 2

Everyday services 3 of 3

Lodging 0 of 2

One square per service type, shaded by how many: none, one, a few, five or more. A blank square means none was counted — the sources do not distinguish “none here” from “not counted”.

A food shop, a school and somewhere to eat or drink. ^[3,4]

5 × Bakery (boulangerie) (AUTREMENT CHOCOLAT · AUX PLAISIRS GOURMANDS · BOULANGERIE HENRI IV · LES GOURMANDISES DU MESNIL · LES DELICES DE DIDOW). ^[3,4]

2 × Butcher (boucherie) (BOUCHERIE HENRI IV · BOUCHERIE CHAMPMESNIL). ^[3,4]

4 × Grocery (épicerie / supérette) (MAISON PAULETTE · PHOENIX EXOTIC · ROSE & LEON, L'EPICERIE · SK MARKET). ^[3,4]

2 × Supermarket (CARREFOUR CITY · CARREFOUR EXPRESS). ^[3,4]

8 × Restaurant (L HARMONIE · SALAMA · LE PANACHE BLANC · NEX · LA BOTTE A PIZZA). ^[3,4]

1 × Café / bar (LE MESNIL). ^[4]

2 × Nursery school (maternelle) (ECOLE MATERNELLE PUBLIQUE CHAMPMESNIL · ECOLE MATERNELLE PUBLIQUE BOIS DU FAY). ^[3]

2 × Primary school (élémentaire) (ECOLE ELEMENTAIRE CHAMPMESNIL · ECOLE ELEMENTAIRE BOIS DU FAY). ^[3]

3 × Collège (COLLEGE PHILIPPE DE CHAMPAIGNE · SEDP · COLLEGE PRIVE SAINTE-THERESE). ^[3]

5 × GP (médecin généraliste) (BRUNO TRAMBLY DE LAISSARDIERE, MÉDECIN · NISRINE ANTARI, MÉDECIN · FLORENCE KAHN-LAMBERT, MÉDECIN · JACQUELINE MARCEL-DAMAS, MÉDECIN · ELISE COURDIER, MÉDECIN). ^[3]

2 × Pharmacy (SELARL PHARMACIE DE L EGLISE · SELARL PHARMACIE D HENRIVILLE). ^[3,4]

1 × Post office / agence postale (LA POSTE). ^[3]

1 × Library (BIBLIOTHÉQUE LÉON BOBIN ASSOCIATION CLC). ^[3]

3 × Gym / sports hall (GYMNASE CHAMPAIGNE · COMPLEXE SPORTIF GUY LEFEBVRE · COLLEGE SAINTE THERESE). ^[3]

3 × Bank (CAISSE D'EPARGNE ET DE PREVOYANCE ILE-DE-FRANCE · SOCIETE GENERALE · BNP PARIBAS). ^[3]

7 × Hairdresser (L ESPRIT COIFFURE · OSMOSE · DS COIFFURE · EXCELLENCE). ^[3,4]

1 × Fuel station (STATION SERVICE). ^[3]

Not counted, because the business register records them as closed: 2 × Bakery (boulangerie), 1 × Butcher (boucherie), 3 × Restaurant.

All 25 service types, with per-source counts

Type	Count	Names	Sources
Bakery (boulangerie)	5	AUTREMENT CHOCOLAT · AUX PLAISIRS GOURMANDS · BOULANGERIE HENRI IV · LES GOURMANDISES DU MESNIL · LES DELICES DE DIDOW	INSEE BPE 5 / INSEE SIRENE 6 [3,4]
Butcher (boucherie)	2	BOUCHERIE HENRI IV · BOUCHERIE CHAMPMESNIL	INSEE BPE 2 / INSEE SIRENE 2 [3,4]
Grocery (épicerie / supérette)	4	MAISON PAULETTE · PHOENIX EXOTIC · ROSE & LEON, L'EPICERIE · SK MARKET	INSEE BPE 4 / INSEE SIRENE 4 [3,4]
Supermarket	2	CARREFOUR CITY · CARREFOUR EXPRESS	INSEE BPE 2 / INSEE SIRENE 2 [3,4]
Cheese shop (fromagerie)	0		INSEE SIRENE 0 [4]
Fishmonger	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Restaurant	8	L HARMONIE · SALAMA · LE PANACHE BLANC · NEX · LA BOTTE A PIZZA	INSEE BPE 8 / INSEE SIRENE 10 [3,4]
Café / bar	1	LE MESNIL	INSEE SIRENE 1 [4]
Nursery school (maternelle)	2	ECOLE MATERNELLE PUBLIQUE CHAMPMESNIL · ECOLE MATERNELLE PUBLIQUE BOIS DU FAY	INSEE BPE 2 [3]
Primary school (élémentaire)	2	ECOLE ELEMENTAIRE CHAMPMESNIL · ECOLE ELEMENTAIRE BOIS DU FAY	INSEE BPE 2 [3]
Collège	3	COLLEGE PHILIPPE DE CHAMPAIGNE · SEDP · COLLEGE PRIVE SAINTE-THERESE	INSEE BPE 3 [3]
GP (médecin généraliste)	5	BRUNO TRAMBLY DE LAISSARDIERE, MÉDECIN · NISRINE ANTARI, MÉDECIN · FLORENCE KAHN-LAMBERT, MÉDECIN · JACQUELINE MARCEL-DAMAS, MÉDECIN · ELISE COURDIER, MÉDECIN	INSEE BPE 5 [3]
Pharmacy	2	SELARL PHARMACIE DE L EGLISE · SELARL PHARMACIE D HENRIVILLE	INSEE BPE 2 / INSEE SIRENE 3 [3,4]
Nurse	0		INSEE BPE 0 [3]
Dentist	0		INSEE BPE 0 [3]
Post office / agence postale	1	LA POSTE	INSEE BPE 1 [3]
Library	1	BIBLIOTHÉQUE LÉON BOBIN ASSOCIATION CLC	INSEE BPE 1 [3]
Cinema	0		INSEE BPE 0 [3]
Gym / sports hall	3	GYMNASE CHAMPAIGNE · COMPLEXE SPORTIF GUY LEFEBVRE · COLLEGE SAINTE THERESE	INSEE BPE 3 [3]
Swimming pool	0		INSEE BPE 0 [3]
Bank	3	CAISSE D'EPARGNE ET DE PREVOYANCE ILE-DE-FRANCE · SOCIETE GENERALE · BNP PARIBAS	INSEE BPE 3 [3]
Hairdresser	7	L ESPRIT COIFFURE · OSMOSE · DS COIFFURE · EXCELLENCE	INSEE BPE 7 / INSEE SIRENE 7 [3,4]
Fuel station	1	STATION SERVICE	INSEE BPE 1 / INSEE SIRENE 0 [3]
Hotel	0		INSEE SIRENE 1 / INSEE BPE 0 [4]
Campsite	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]

Market and village life

Market day: unknown — nothing found in the datasets or on the commune website.

Trajectory

1968: 4,061 2023: 7,276 axis from zero, so the slope compares with any other commune

Population 6,593 (2012) → 7,276 (2023): 10.4 % over 10 years. ^[5,1]

Population 6,528 (1990) → 7,276 (2023): 11.5 % over 30 years. ^[6,1]

Dwellings (2023): 3,197, of which 1.9 % second homes and 4.7 % vacant. ^[7]

Access and surroundings

Which way the everyday services lie

In the commune Bakery, Food shop, GP, Pharmacy Primary school — 0.7 km NW Straight-line, from the mairie, in the direction given. Services in the same town share a spoke. Distance is not travel time: a pass or an estuary can double it.

Bakery (Le Mesnil-Saint-Denis): 0.4 km to the north-east (straight line). ^[8]

Food shop (Le Mesnil-Saint-Denis): 0.4 km to the north-east (straight line). ^[8]

GP (Le Mesnil-Saint-Denis): 0.3 km to the north-east (straight line). ^[8]

Pharmacy (Le Mesnil-Saint-Denis): 0.4 km to the north-east (straight line). ^[8]

Primary school (Le Mesnil-Saint-Denis): 0.7 km to the north-west (straight line). ^[8]

Climate

Where this sits nationally

Days at or above 30 °C 9.6

Days at or below 0 °C 37.5

Muggy days a summer 0.8

Each track runs from the 5th to the 95th percentile of the 34,141 communes with that measurement; the tick is the median. A value beyond either end sits at the end and is marked ▸.

An average of 10 days a year at or above 30 °C and 38 days at or below 0 °C, over 30 complete years in 1995–2024. ^[9]

Measured at the TRAPPES weather station, 5.3 km away at 167 m; the village itself is at 174 m. ^[9]

Muggy days — a dew point at or above 18 °C — average 1 day a summer. ^[9]

Humidity measured at TRAPPES, 5.3 km away at 167 m, over 30 summers. ^[9]

An average of 698 mm of rain a year, spread over 116 days — about 6 mm on a day it rains. ^[9]

Rainfall measured at TRAPPES, 5.3 km away at 167 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[9]

Uncertainties

No specific uncertainties flagged.

References

INSEE census (RP) 2023 — 78397/2023
INSEE density grid 2026
INSEE BPE 2025
INSEE SIRENE 2026-09
INSEE census (RP) 2023 — 78397/2012
INSEE census (RP) 2023 — 78397/1990
INSEE census (RP) 2023 — 78397/logement/2023
INSEE BPE 2025 — 78397
Météo-France daily climatology 1995-2024

Villages like this one

Matched on size, density, second homes and which everyday shops and services are present — not on the score, so a village of the same kind that is doing better or worse shows up rather than being hidden.

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Vizille	38	500 km SE	7,292	63.1	Served	no figures
Vendargues	34	586 km S	7,262	69.3	Served	Warmer summers, similar winters.Summers feel more humid.summer 0 % · winter 95 % · humidity 0 %
Colombelles	14	173 km W	7,243	63.1	Served	Cooler summers, similar winters.Summers feel about as humid.summer 82 % · winter 85 % · humidity 100 %
Mably	42	335 km SE	7,233	56.7	Partly served	Warmer summers and colder winters.Summers feel more humid.summer 59 % · winter 57 % · humidity 64 %
Toulouges	66	679 km S	7,450	52.2	Partly served	Warmer summers and milder winters.Summers feel more humid.summer 0 % · winter 77 % · humidity 0 %
Saint-Nicolas-de-Port	54	319 km E	7,359	53.4	Partly served	Similar summers, colder winters.Summers feel about as humid.summer 87 % · winter 69 % · humidity 100 %

Order by distance instead

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Colombelles	14	173 km W	7,243	63.1	Served	Cooler summers, similar winters.Summers feel about as humid.summer 82 % · winter 85 % · humidity 100 %
Saint-Nicolas-de-Port	54	319 km E	7,359	53.4	Partly served	Similar summers, colder winters.Summers feel about as humid.summer 87 % · winter 69 % · humidity 100 %
Mably	42	335 km SE	7,233	56.7	Partly served	Warmer summers and colder winters.Summers feel more humid.summer 59 % · winter 57 % · humidity 64 %
Vizille	38	500 km SE	7,292	63.1	Served	no figures
Vendargues	34	586 km S	7,262	69.3	Served	Warmer summers, similar winters.Summers feel more humid.summer 0 % · winter 95 % · humidity 0 %
Toulouges	66	679 km S	7,450	52.2	Partly served	Warmer summers and milder winters.Summers feel more humid.summer 0 % · winter 77 % · humidity 0 %

Sort and compare these on the full list →

…and in much the same climate

The same match on size and services, narrowed to communes whose summers, winters and summer humidity are all close to Le Mesnil-Saint-Denis's. All three are required, so this section is absent for the 11.8 % of communes with no humidity station near enough to measure: two temperature axes alone cannot tell a muggy coast from a dry one.

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Fresnes-sur-Escaut	59	222 km NE	7,354	58.2	Partly served	Much the same temperatures.Summers feel about as humid.summer 95 % · winter 89 % · humidity 100 %
Gaillon	27	65 km NW	6,746	66.2	Served	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 100 % · humidity 100 %
La Montagne	44	321 km SW	6,505	57.8	Partly served	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 86 % · humidity 86 %
Ballancourt-sur-Essonne	91	39 km SE	8,191	59.6	Partly served	Much the same temperatures.Summers feel about as humid.summer 87 % · winter 95 % · humidity 100 %
Vern-sur-Seiche	35	274 km W	8,207	61.4	Served	Much the same temperatures.Summers feel about as humid.summer 100 % · winter 89 % · humidity 100 %
Saint-Pierre-lès-Elbeuf	76	90 km NW	8,306	57.6	Partly served	Much the same temperatures.Summers feel about as humid.summer 95 % · winter 91 % · humidity 93 %

Elsewhere

Commune website · Wikipedia (en) ·Wikipedia (fr) · INSEE dossier complet · OpenStreetMap · Web search · Map

Permanent link: https://vivantrural.com/en/fr/78397-le-mesnil-saint-denis