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Saint-Illiers-la-Ville

Yvelines · CC Les Portes de l'Ile de France · INSEE 78558

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

Few services 26.6/100 · confidence: high· Better served than 62 % of the {n|commune|communes} of a similar size.

Identity

Saint-Illiers-la-Ville (INSEE 78558) is in Yvelines (78), part of CC Les Portes de l'Ile de France. Population 350 (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/78558-saint-illiers-la-ville

Vitality score

Vitality score 26.6/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 62 % of the 18,079 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.

ComponentValue (0–1)WeightContribution
Daily food0250
Social0.32206.32
Education0.63106.32
Health0100
Public & culture050
Population trend11010
Housing mix050

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

1 × Restaurant (GNRESTAURANT). [3,4]

1 × Primary school (élémentaire) (ECOLE ELEMENTAIRE PUBLIQUE). [3]

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
TypeCountNamesSources
Bakery (boulangerie)0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Butcher (boucherie)0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Grocery (épicerie / supérette)0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Supermarket0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Cheese shop (fromagerie)0INSEE SIRENE 0 [4]
Fishmonger0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Restaurant1GNRESTAURANTINSEE BPE 1 / INSEE SIRENE 1 [3,4]
Café / bar0INSEE SIRENE 0 [4]
Nursery school (maternelle)0INSEE BPE 0 [3]
Primary school (élémentaire)1ECOLE ELEMENTAIRE PUBLIQUEINSEE BPE 1 [3]
Collège0INSEE BPE 0 [3]
GP (médecin généraliste)0INSEE BPE 0 [3]
Pharmacy0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Nurse0INSEE BPE 0 [3]
Dentist0INSEE BPE 0 [3]
Post office / agence postale0INSEE BPE 0 [3]
Library0INSEE BPE 0 [3]
Cinema0INSEE BPE 0 [3]
Gym / sports hall0INSEE BPE 0 [3]
Swimming pool0INSEE BPE 0 [3]
Bank0INSEE BPE 0 [3]
Hairdresser0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Fuel station0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Hotel0INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Campsite0INSEE 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: 146 peak 2017: 395 2023: 350 axis from zero, so the slope compares with any other commune

Population 340 (2012) → 350 (2023): 2.9 % over 10 years. [5,1]

Population 228 (1990) → 350 (2023): 53.5 % over 30 years. [6,1]

Dwellings (2023): 315, of which 53 % second homes and 2.2 % vacant. [7]

Access and surroundings

Which way the everyday services lie

2.5 km5 kmBakery — 3.3 km S (Bréval)Food shop — 3.4 km S (Bréval)Pharmacy — 3.4 km S (Bréval)GP — 3.6 km S (Bréval)
In the commune Primary school Bakery — 3.3 km SFood shop — 3.4 km SPharmacy — 3.4 km SGP — 3.6 km S 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 (Bréval): 3.3 km to the south (straight line). [8]

Food shop (Bréval): 3.4 km to the south (straight line). [8]

GP (Bréval): 3.6 km to the south (straight line). [8]

Pharmacy (Bréval): 3.4 km to the south (straight line). [8]

Primary school (Saint-Illiers-la-Ville): 0 km to the north-west (straight line). [9]

Climate

Where this sits nationally

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 12 days a year at or above 30 °C and 39 days at or below 0 °C, over 29 complete years in 1995–2024. [10]

Measured at the MAGNANVILLE weather station, 10 km away at 123 m; the village itself is at 141 m. [10]

Muggy days — a dew point at or above 18 °C — average 1 day a summer. [10]

Humidity measured at MAGNANVILLE, 10 km away at 123 m, over 30 summers. [10]

An average of 705 mm of rain a year, spread over 121 days — about 5.8 mm on a day it rains. [10]

Rainfall measured at ST-ILLIERS, 3 km away at 141 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. [10]

What property sold for

20 houses sold between 2021 and 2025, at a median of 270,000 € — 1,601 € per m² of built surface. [11]

The median across Yvelines is 3,657 € per m², so this commune sits below it. [11]

These are recorded sale prices, not valuations or asking prices, and a median over five years spans five different markets. Built surface excludes land, which carries much of a rural property's value.

Uncertainties

No specific uncertainties flagged.

References

  1. INSEE census (RP) 2023 — 78558/2023
  2. INSEE density grid 2026
  3. INSEE BPE 2025
  4. INSEE SIRENE 2026-09
  5. INSEE census (RP) 2023 — 78558/2012
  6. INSEE census (RP) 2023 — 78558/1990
  7. INSEE census (RP) 2023 — 78558/logement/2023
  8. INSEE BPE 2025 — 78107
  9. INSEE BPE 2025 — 78558
  10. Météo-France daily climatology 1995-2024
  11. DVF (DGFiP property transactions) 2021-2025

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.

CommuneDeptDistancePopulationScoreBandClimate vs here
Villaroger73551 km SE35523.9Few servicesSimilar summers, colder winters.Summers feel about as humid.summer 95 % · winter 0 % · humidity 93 %
Moncale2B914 km SE34827.3Few servicesWarmer summers and milder winters.Summers feel about as humid.summer 49 % · winter 62 % · humidity 93 %
Mostuéjouls12545 km S33321.5Few servicesWarmer summers, similar winters.Summers feel about as humid.summer 69 % · winter 89 % · humidity 100 %
Vattetot-sur-Mer76124 km NW32830.1Few servicesCooler summers and milder winters.summer 74 % · winter 72 %
Château-Bernard38540 km SE29530.4Few servicesCooler summers, similar winters.Summers feel about as humid.summer 74 % · winter 85 % · humidity 93 %
Brizon74491 km SE45728.9Few servicesCooler summers and colder winters.Summers feel about as humid.summer 74 % · winter 5 % · humidity 93 %
Order by distance instead
CommuneDeptDistancePopulationScoreBandClimate vs here
Vattetot-sur-Mer76124 km NW32830.1Few servicesCooler summers and milder winters.summer 74 % · winter 72 %
Brizon74491 km SE45728.9Few servicesCooler summers and colder winters.Summers feel about as humid.summer 74 % · winter 5 % · humidity 93 %
Château-Bernard38540 km SE29530.4Few servicesCooler summers, similar winters.Summers feel about as humid.summer 74 % · winter 85 % · humidity 93 %
Mostuéjouls12545 km S33321.5Few servicesWarmer summers, similar winters.Summers feel about as humid.summer 69 % · winter 89 % · humidity 100 %
Villaroger73551 km SE35523.9Few servicesSimilar summers, colder winters.Summers feel about as humid.summer 95 % · winter 0 % · humidity 93 %
Moncale2B914 km SE34827.3Few servicesWarmer summers and milder winters.Summers feel about as humid.summer 49 % · winter 62 % · humidity 93 %

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-Illiers-la-Ville'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.

CommuneDeptDistancePopulationScoreBandClimate vs here
Moulinet06718 km SE26831.3Few servicesMuch the same temperatures.Summers feel about as humid.summer 90 % · winter 88 % · humidity 86 %
Fougax-et-Barrineuf09678 km S42824.8Few servicesMuch the same temperatures.Summers feel about as humid.summer 97 % · winter 96 % · humidity 93 %
Saint-Siméon2781 km NW33320.6Few servicesMuch the same temperatures.Summers feel about as humid.summer 90 % · winter 96 % · humidity 100 %
Contes62162 km N35424.4Few servicesMuch the same temperatures.Summers feel about as humid.summer 87 % · winter 89 % · humidity 100 %
Vauxrenard69386 km SE31128.9Few servicesMuch the same temperatures.Summers feel about as humid.summer 90 % · winter 89 % · humidity 100 %
Sougères-en-Puisaye89206 km SE28923.6Few servicesMuch the same temperatures.Summers feel about as humid.summer 87 % · winter 99 % · humidity 93 %