Mareil-le-Guyon

Yvelines · CC Coeur d'Yvelines · INSEE 78366

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

Few services 26.3/100 · confidence: high· Better served than 54 % of the {n|commune|communes} of a similar size.

Identity

Mareil-le-Guyon (INSEE 78366) is in Yvelines (78), part of CC Coeur d'Yvelines. Population 420 (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/78366-mareil-le-guyon

Vitality score

Vitality score 26.3/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 54 % of the 17,991 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	20	0
Education	0.63	10	6.32
Health	0	10	0
Public & culture	0.32	5	1.58
Population trend	1	10	10
Housing mix	0.89	5	4.45

Services

What is here, at a glance

Food 0 of 6

Eating out 0 of 1

Cafés and bars 0 of 1

Schools 1 of 3

Health 0 of 4

Public services 0 of 1

Culture 1 of 2

Sport 0 of 2

Everyday services 0 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 school, but no food shop and nowhere to eat or drink. ^[3,4]

1 × Nursery school (maternelle) (ECOLE MATERNELLE SIVOS MBT). ^[3]

1 × Library (BIBLIOTHÈQUE MUNICIPALE DE MAREIL LE GUYON). ^[3]

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Restaurant, Café / bar, Primary school (élémentaire), GP (médecin généraliste), Pharmacy, Post office / agence postale. ^[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	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Café / bar	0		INSEE SIRENE 0 [4]
Nursery school (maternelle)	1	ECOLE MATERNELLE SIVOS MBT	INSEE BPE 1 [3]
Primary school (élémentaire)	0		INSEE BPE 0 [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	1	BIBLIOTHÈQUE MUNICIPALE DE MAREIL LE GUYON	INSEE BPE 1 [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 [3,4]
Fuel station	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Hotel	0		INSEE BPE 0 / INSEE SIRENE 0 [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: 215 2023: 420 axis from zero, so the slope compares with any other commune

Population 369 (2012) → 420 (2023): 13.8 % over 10 years. ^[5,1]

Population 267 (1990) → 420 (2023): 57.3 % over 30 years. ^[6,1]

Dwellings (2023): 199, of which 5.5 % second homes and 8.5 % vacant. ^[7]

Access and surroundings

Which way the everyday services lie

In the commune Primary school Bakery — 1.7 km NWFood shop — 2.2 km WGP — 2.7 km WPharmacy — 3.1 km SW 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 (Méré): 1.7 km to the north-west (straight line). ^[8]

Food shop (Méré): 2.2 km to the west (straight line). ^[8]

GP (Méré): 2.7 km to the west (straight line). ^[8]

Pharmacy (Montfort-l'Amaury): 3.1 km to the south-west (straight line). ^[9]

Primary school (Mareil-le-Guyon): 0 km to the north-west (straight line). ^[10]

Climate

Where this sits nationally

Days at or above 30 °C 13.9

Days at or below 0 °C 43.1

Muggy days a summer 4

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 14 days a year at or above 30 °C and 43 days at or below 0 °C, over 28 complete years in 1995–2024. ^[11]

Measured at the ST-LEGER_SAPC weather station, 11.9 km away at 176 m; the village itself is at 76 m. ^[11]

The village sits 100 m below the station, so each day's reading was shifted by 5.71 °C per km of altitude before the days were counted. Expect the result to be within about 0.68 °C. ^[11]

Muggy days — a dew point at or above 18 °C — average 4 days a summer. ^[11]

Humidity measured at ST-LEGER_SAPC, 11.9 km away at 176 m, over 18 summers. ^[11]

That station sits 100 m above the village, so each day's humidity was shifted by 4.22 °C per km before the muggy days were counted. ^[11]

An average of 665 mm of rain a year, spread over 117 days — about 5.7 mm on a day it rains. ^[11]

Rainfall measured at AUTOUILLET, 7.1 km away at 126 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 — 78366/2023
INSEE density grid 2026
INSEE BPE 2025
INSEE SIRENE 2026-09
INSEE census (RP) 2023 — 78366/2012
INSEE census (RP) 2023 — 78366/1990
INSEE census (RP) 2023 — 78366/logement/2023
INSEE BPE 2025 — 78389
INSEE BPE 2025 — 78420
INSEE BPE 2025 — 78366
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
Saint-Martin-de-Villereglan	11	633 km S	403	26.2	Few services	Warmer summers, similar winters.Summers feel more humid.summer 23 % · winter 93 % · humidity 21 %
Monbrun	32	574 km S	394	26.3	Few services	Warmer summers, similar winters.Summers feel more humid.summer 28 % · winter 93 % · humidity 79 %
Cormeilles	60	98 km N	392	26.2	Few services	Cooler summers and colder winters.Summers feel drier.summer 85 % · winter 74 % · humidity 71 %
Lourenties	64	631 km S	427	26.8	Few services	Much the same temperatures.Summers feel more humid.summer 97 % · winter 100 % · humidity 79 %
Floure	11	625 km S	405	26.7	Few services	Warmer summers and milder winters.Summers feel more humid.summer 31 % · winter 58 % · humidity 43 %
Feigneux	60	95 km NE	465	21.8	Few services	Much the same temperatures.summer 90 % · winter 92 %

Order by distance instead

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Feigneux	60	95 km NE	465	21.8	Few services	Much the same temperatures.summer 90 % · winter 92 %
Cormeilles	60	98 km N	392	26.2	Few services	Cooler summers and colder winters.Summers feel drier.summer 85 % · winter 74 % · humidity 71 %
Monbrun	32	574 km S	394	26.3	Few services	Warmer summers, similar winters.Summers feel more humid.summer 28 % · winter 93 % · humidity 79 %
Floure	11	625 km S	405	26.7	Few services	Warmer summers and milder winters.Summers feel more humid.summer 31 % · winter 58 % · humidity 43 %
Lourenties	64	631 km S	427	26.8	Few services	Much the same temperatures.Summers feel more humid.summer 97 % · winter 100 % · humidity 79 %
Saint-Martin-de-Villereglan	11	633 km S	403	26.2	Few services	Warmer summers, similar winters.Summers feel more humid.summer 23 % · winter 93 % · humidity 21 %

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 Mareil-le-Guyon'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
Visker	65	643 km S	362	25.7	Few services	Much the same temperatures.Summers feel about as humid.summer 95 % · winter 91 % · humidity 100 %
Évry	89	119 km SE	402	23.8	Few services	Much the same temperatures.Summers feel about as humid.summer 87 % · winter 96 % · humidity 86 %
Porquéricourt	60	121 km NE	416	22.2	Few services	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 95 % · humidity 86 %
Neuville-sur-Vanne	10	154 km E	475	18.5	No daily shops	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 99 % · humidity 86 %
Soulanges	51	197 km E	453	11.4	No daily shops	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 89 % · humidity 86 %
Ordizan	65	646 km S	513	29.8	Few services	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 91 % · humidity 100 %

Elsewhere

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

Permanent link: https://vivantrural.com/en/fr/78366-mareil-le-guyon