Saint-Yon

Essonne · CC Entre Juine et Renarde (CCEJR) · INSEE 91581

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

Few services 25/100 · confidence: high· Better served than 21 % of the {n|commune|communes} of a similar size.

Identity

Saint-Yon (INSEE 91581) is in Essonne (91), part of CC Entre Juine et Renarde (CCEJR). Population 923 (2023). ^[1]

INSEE density class: Ceintures urbaines (level 4). ^[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/91581-saint-yon

Vitality score

Vitality score 25/100 — Few services (model fr-v0.2).

Confidence: high.

Better served than 21 % of the 14,821 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	0.32	10	3.16
Public & culture	0	5	0
Population trend	0.7	10	6.99
Housing mix	0.95	5	4.77

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 1 of 4

Public services 0 of 1

Culture 0 of 2

Sport 0 of 2

Everyday services 1 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 × Primary school (élémentaire) (ECOLE ELEMENTAIRE RAIL PERDU). ^[3]

1 × GP (médecin généraliste) (MICHEL BESSIS, MÉDECIN). ^[3]

1 × Hairdresser (RODRIGUES DE OLIVEIRA MARGARIDA). ^[3,4]

Not found in the commune: Bakery (boulangerie), Butcher (boucherie), Grocery (épicerie / supérette), Supermarket, Restaurant, Café / bar, Nursery school (maternelle), 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	0		INSEE BPE 0 / INSEE SIRENE 0 [3,4]
Café / bar	0		INSEE SIRENE 0 [4]
Nursery school (maternelle)	0		INSEE BPE 0 [3]
Primary school (élémentaire)	1	ECOLE ELEMENTAIRE RAIL PERDU	INSEE BPE 1 [3]
Collège	0		INSEE BPE 0 [3]
GP (médecin généraliste)	1	MICHEL BESSIS, MÉDECIN	INSEE BPE 1 [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	1	RODRIGUES DE OLIVEIRA MARGARIDA	INSEE BPE 1 / INSEE SIRENE 1 [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: 289 2023: 923 axis from zero, so the slope compares with any other commune

Population 889 (2012) → 923 (2023): 3.8 % over 10 years. ^[5,1]

Population 770 (1990) → 923 (2023): 19.9 % over 30 years. ^[6,1]

Dwellings (2023): 395, of which 2.3 % second homes and 5.1 % vacant. ^[7]

Access and surroundings

Which way the everyday services lie

In the commune Primary school GP — 0.5 km NEBakery — 1.1 km NWFood shop — 1.1 km NWPharmacy — 1.1 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 (Breuillet): 1.1 km to the north-west (straight line). ^[8]

Food shop (Breuillet): 1.1 km to the north-west (straight line). ^[8]

GP (Saint-Yon): 0.5 km to the north-east (straight line). ^[9]

Pharmacy (Breuillet): 1.1 km to the north-west (straight line). ^[8]

Primary school (Saint-Yon): 0 km to the south-east (straight line). ^[9]

Climate

Where this sits nationally

Days at or above 30 °C 15.6

Days at or below 0 °C 52.2

Muggy days a summer 0.7

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 16 days a year at or above 30 °C and 52 days at or below 0 °C, over 26 complete years in 1995–2024. ^[10]

Measured at the FONTENAY-LES-B. weather station, 5.8 km away at 109 m; the village itself is at 91 m. ^[10]

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

Humidity measured at BRETIGNY_SAPC, 11.4 km away at 78 m, over 15 summers. ^[10]

An average of 680 mm of rain a year, spread over 115 days — about 5.9 mm on a day it rains. ^[10]

Rainfall measured at ST-CHERON, 4.4 km away at 146 m. Rainfall is not adjusted for altitude: unlike temperature it has no simple gradient to correct by. ^[10]

Uncertainties

No specific uncertainties flagged.

References

INSEE census (RP) 2023 — 91581/2023
INSEE density grid 2026
INSEE BPE 2025
INSEE SIRENE 2026-09
INSEE census (RP) 2023 — 91581/2012
INSEE census (RP) 2023 — 91581/1990
INSEE census (RP) 2023 — 91581/logement/2023
INSEE BPE 2025 — 91105
INSEE BPE 2025 — 91581
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
Ronquerolles	95	68 km N	907	22.4	Few services	Similar summers, milder winters.Summers feel more humid.summer 90 % · winter 78 % · humidity 71 %
Hériménil	54	318 km E	894	21.2	Few services	no figures
Aux Marais	60	95 km N	921	35.6	Few services	Cooler summers, similar winters.Summers feel about as humid.summer 82 % · winter 99 % · humidity 100 %
Saint-Alban-du-Rhône	38	399 km SE	965	31.7	Few services	Warmer summers and milder winters.Summers feel more humid.summer 28 % · winter 72 % · humidity 79 %
La Trinité-du-Mont	76	161 km NW	951	24.9	Few services	Cooler summers and milder winters.Summers feel about as humid.summer 77 % · winter 82 % · humidity 100 %
Wolxheim	67	392 km E	961	32.5	Few services	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 92 % · humidity 93 %

Order by distance instead

Commune	Dept	Distance	Population	Score	Band	Climate vs here
Ronquerolles	95	68 km N	907	22.4	Few services	Similar summers, milder winters.Summers feel more humid.summer 90 % · winter 78 % · humidity 71 %
Aux Marais	60	95 km N	921	35.6	Few services	Cooler summers, similar winters.Summers feel about as humid.summer 82 % · winter 99 % · humidity 100 %
La Trinité-du-Mont	76	161 km NW	951	24.9	Few services	Cooler summers and milder winters.Summers feel about as humid.summer 77 % · winter 82 % · humidity 100 %
Hériménil	54	318 km E	894	21.2	Few services	no figures
Wolxheim	67	392 km E	961	32.5	Few services	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 92 % · humidity 93 %
Saint-Alban-du-Rhône	38	399 km SE	965	31.7	Few services	Warmer summers and milder winters.Summers feel more humid.summer 28 % · winter 72 % · humidity 79 %

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-Yon'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
Wolxheim	67	392 km E	961	32.5	Few services	Much the same temperatures.Summers feel about as humid.summer 90 % · winter 92 % · humidity 93 %
Rouvres	77	68 km NE	1,038	22.2	Few services	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 89 % · humidity 93 %
Lessy	57	293 km E	794	33.3	Few services	Much the same temperatures.Summers feel about as humid.summer 95 % · winter 86 % · humidity 100 %
Marolles	51	180 km E	796	32	Few services	Much the same temperatures.Summers feel about as humid.summer 97 % · winter 99 % · humidity 93 %
Cuvry	57	296 km E	1,096	29.7	Few services	Much the same temperatures.Summers feel about as humid.summer 100 % · winter 91 % · humidity 100 %
Aviron	27	96 km NW	1,096	15.9	No daily shops	Much the same temperatures.Summers feel about as humid.summer 92 % · winter 100 % · humidity 100 %

Elsewhere

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

Permanent link: https://vivantrural.com/en/fr/91581-saint-yon