Saint-Lambert

Yvelines · CC de la Haute Vallée de Chevreuse · INSEE 78561

A school and somewhere to eat or drink, but no food shop.

Few services 28.4/100 · confidence: high· Better served than 58 % of the {n|commune|communes} of a similar size.

Identity

Saint-Lambert (INSEE 78561) is in Yvelines (78), part of CC de la Haute Vallée de Chevreuse. Population 447 (2023). ^[1]

INSEE density class: Rural à habitat dispersé (level 6). ^[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/78561-saint-lambert

Vitality score

Vitality score 28.4/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 58 % of the 17,931 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	25	0
Social	0.32	20	6.32
Education	0.63	10	6.32
Health	0	10	0
Public & culture	0	5	0
Population trend	0.67	10	6.7
Housing mix	0.96	5	4.79

Services

What is here, at a glance

Food 0 of 6

Eating out 1 of 1

Cafés and bars 0 of 1

Schools 1 of 3

Health 0 of 4

Public services 0 of 1

Culture 0 of 2

Sport 0 of 2

Everyday services 0 of 3

Lodging 1 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 school and somewhere to eat or drink, but no food shop. ^[3,4]

1 × Restaurant (LE VAL DU PORT ROYAL). ^[3,4]

1 × Primary school (élémentaire) (ECOLE PRIMAIRE). ^[3]

2 × Hotel (CENTRE DE PORT ROYAL · LE MANOIR DE SAUVEGRAIN). ^[3,4]

Not counted, because the business register records them as closed: 1 × Hairdresser.

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Café / bar, Nursery school (maternelle), GP (médecin généraliste), Pharmacy, Post office / agence postale, Library. ^[3,4]

All 25 service types, with per-source counts

Type	Count	Names	Sources
Bakery (boulangerie)	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Butcher (boucherie)	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Grocery (épicerie / supérette)	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Supermarket	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Cheese shop (fromagerie)	0		INSEE SIRENE 0 [4]
Fishmonger	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Restaurant	1	LE VAL DU PORT ROYAL	INSEE BPE 1 / INSEE SIRENE 2 [3,4]
Café / bar	0		INSEE SIRENE 0 [4]
Nursery school (maternelle)	0		INSEE BPE 0 [3]
Primary school (élémentaire)	1	ECOLE PRIMAIRE	INSEE BPE 1 [3]
Collège	0		INSEE BPE 0 [3]
GP (médecin généraliste)	0		INSEE BPE 0 [3]
Pharmacy	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Nurse	0		INSEE BPE 0 [3]
Dentist	0		INSEE BPE 0 [3]
Post office / agence postale	0		INSEE BPE 0 [3]
Library	0		INSEE BPE 0 [3]
Cinema	0		INSEE BPE 0 [3]
Gym / sports hall	0		INSEE BPE 0 [3]
Swimming pool	0		INSEE BPE 0 [3]
Bank	0		INSEE BPE 0 [3]
Hairdresser	0		INSEE BPE 0 / INSEE SIRENE 0 [3]
Fuel station	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Hotel	2	CENTRE DE PORT ROYAL · LE MANOIR DE SAUVEGRAIN	INSEE BPE 2 / INSEE SIRENE 5 [3,4]
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: 198 peak 2017: 452 2023: 447 axis from zero, so the slope compares with any other commune

Population 440 (2012) → 447 (2023): 1.6 % over 10 years. ^[5,1]

Population 382 (1990) → 447 (2023): 17 % over 30 years. ^[6,1]

Dwellings (2023): 187, of which 2.1 % second homes and 5.3 % vacant. ^[7]

Access and surroundings

Which way the everyday services lie

In the commune Primary school Bakery — 1.1 km NFood shop — 1.5 km NEGP — 3.0 km SEPharmacy — 3.1 km SE 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 (Magny-les-Hameaux): 1.1 km to the north (straight line). ^[8]

Food shop (Magny-les-Hameaux): 1.5 km to the north-east (straight line). ^[8]

GP (Chevreuse): 3 km to the south-east (straight line). ^[9]

Pharmacy (Chevreuse): 3.1 km to the south-east (straight line). ^[9]

Primary school (Saint-Lambert): 0.1 km to the north (straight line). ^[10]

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. ^[11]

Measured at the TRAPPES weather station, 4.8 km away at 167 m; the village itself is at 121 m. ^[11]

Muggy days — a dew point at or above 18 °C — average 1 day a summer. ^[11]

Humidity measured at TRAPPES, 4.8 km away at 167 m, over 30 summers. ^[11]

An average of 698 mm of rain a year, spread over 116 days — about 6 mm on a day it rains. ^[11]

Rainfall measured at TRAPPES, 4.8 km away at 167 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[11]

Uncertainties

No specific uncertainties flagged.

References

INSEE census (RP) 2023 — 78561/2023
INSEE density grid 2026
INSEE BPE 2025
INSEE SIRENE 2026-09
INSEE census (RP) 2023 — 78561/2012
INSEE census (RP) 2023 — 78561/1990
INSEE census (RP) 2023 — 78561/logement/2023
INSEE BPE 2025 — 78356
INSEE BPE 2025 — 78160
INSEE BPE 2025 — 78561
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
Allier	65	635 km S	446	32.3	Few services	Warmer summers, similar winters.Summers feel more humid.summer 82 % · winter 100 % · humidity 57 %
Maizières	14	163 km W	437	26.4	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 88 % · humidity 100 %
Penin	62	181 km N	458	31	Few services	Much the same temperatures.Summers feel about as humid.summer 87 % · winter 96 % · humidity 100 %
Crèvecœur-en-Brie	77	65 km E	437	32.2	Few services	Similar summers, colder winters.Summers feel about as humid.summer 97 % · winter 78 % · humidity 100 %
Brousse	81	557 km S	438	32.3	Few services	Warmer summers and colder winters.Summers feel more humid.summer 44 % · winter 82 % · humidity 71 %
Ovillers-la-Boisselle	80	151 km N	431	27.6	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 93 % · humidity 100 %

Order by distance instead

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Crèvecœur-en-Brie	77	65 km E	437	32.2	Few services	Similar summers, colder winters.Summers feel about as humid.summer 97 % · winter 78 % · humidity 100 %
Ovillers-la-Boisselle	80	151 km N	431	27.6	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 93 % · humidity 100 %
Maizières	14	163 km W	437	26.4	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 88 % · humidity 100 %
Penin	62	181 km N	458	31	Few services	Much the same temperatures.Summers feel about as humid.summer 87 % · winter 96 % · humidity 100 %
Brousse	81	557 km S	438	32.3	Few services	Warmer summers and colder winters.Summers feel more humid.summer 44 % · winter 82 % · humidity 71 %
Allier	65	635 km S	446	32.3	Few services	Warmer summers, similar winters.Summers feel more humid.summer 82 % · winter 100 % · humidity 57 %

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 Saint-Lambert'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
Maizières	14	163 km W	437	26.4	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 88 % · humidity 100 %
Penin	62	181 km N	458	31	Few services	Much the same temperatures.Summers feel about as humid.summer 87 % · winter 96 % · humidity 100 %
Ovillers-la-Boisselle	80	151 km N	431	27.6	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 93 % · humidity 100 %
Boissay	76	100 km NW	429	32.2	Few services	Much the same temperatures.Summers feel about as humid.summer 97 % · winter 92 % · humidity 100 %
Amettes	62	202 km N	469	28.2	Few services	Much the same temperatures.Summers feel about as humid.summer 95 % · winter 100 % · humidity 100 %
Bosc-Bordel	76	106 km NW	455	28.2	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 86 % · humidity 100 %

Elsewhere

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

Permanent link: https://vivantrural.com/en/fr/78561-saint-lambert