Is the Pays de Gex
growing with
its services?
Population, housing and everyday proximity
A growing territory
Households are growing faster than the population: for the same number of residents, smaller households occupy more dwellings.
People per household · main residences, main tabulation. The calculation uses household population, not total population.
INSEE · census 2017 and 2023, 2026 geography. Change in stock ≠ new dwellings delivered.
Where is growth concentrated?
Ferney-Voltaire and Saint-Genis-Pouilly account for 35.1% of population growth. Ségny shows the highest growth rate.
Click a municipality or use the list. Actual boundaries · north up.
INSEE · census 2017–2023. Changes are calculated on unrounded values; the ranking changes with the chosen measure.
Documentary coverage, not access to services. Dwellings declared in permits with recorded completion, 2017–2025; physical delivery not verified.
More residents. What services in return?
Supply changes by type of service. The available counts describe neither capacity nor the needs of new residents.
Contrasting trends
Four readings to keep apart
- Inventory
- Units and practice locations recorded, not available appointments.
- Capacity
- Places, staff and opening hours: these resources are not measured here.
- Access
- Theoretical routes to a service; no share of residents covered.
- Diversity
- Several categories being present does not mean every need is met.
Census 2017–2023 · BPE 2020–2025.
No synchronised measure of services catching up.
Presence over time in the municipalities
Documented gains and losses, category by category. An empty cell is not turned into an absence.
INSEE · BPE over time, verified categories. Libraries: comparability caveat. Historical counts at EPCI level; presence/absence at municipal level.
Within walking distance
Candidate addresses and external services complement the isochrones. Their overlap does not measure coverage of recent housing.
IGN: modelled 5, 10 and 15-minute areas. OSM: separate exploratory routes, with no validation on site or of entrances.
Accessibility is assessed from French services recorded in 2025 and the walking network available in 2026. It does not reconstruct conditions at the date of delivery. Swiss reference points: REG 2026.
French isochrones · IGN
IGN · 2026 network · walking to the service. Theoretical calculation, no guarantee of step-free access.
Browse the map items
Isochrones: BPE 2025 destinations selected within the agglomeration, good quality; IGN, 14.10.2026. Optional Swiss reference points: REG 2026, outside the municipal inventory.
Different territories, different situations
Growth and recorded supply are read together, municipality by municipality. Neighbouring services count too, beyond administrative boundaries.
Compare the 27 municipalities
Inventory 2025 · — : not available; 0: documented absence. Neighbouring services appear on the maps, not in the municipal count.
Six residential situations studied
One candidate address per municipality; no ranking or municipal average. Selected destinations, not necessarily the nearest.
Eight municipalities without a food shop from the basket.
Challex, Crozet, Farges, Grilly, Léaz, Pougny, Sauverny and Vesancy. Markets, direct sales and neighbouring services remain to be examined.
Authorisations and construction starts
SDES · Sitadel, 2026-09 release · calendar years 2017–2025 · date of administrative recording, data not estimated and subject to revision. Neither completions nor a cohort’s completion rate.
What proximity tomorrow?
Housing stock grows faster than population. Services change unevenly; the cases studied do not measure whether they are sufficient.
Presence does not mean proximity.
A recorded facility guarantees neither a usable route nor adequate capacity. Growth, access and capacity need to be examined together.
Planning recommendations- 01Ferney and Saint-Genis account for most of the population gain: consider housing, local services and their capacity together.
- 02In the eight municipalities without a basket shop, check neighbouring services and walking links before calling it a shortfall.
- 03Coordinate housing programming, centres and walking routes. The documented situations shed light on local relationships; they do not describe all recent housing.
Partial integration · method and limitations B.2
731 permits, 4,755 declared dwellings, completion recorded between 2017 and 2025. Sitadel extraction, September 2026 release: authorisations from 2013, eight pages checked, unique identifiers. This is neither an exhaustive record of deliveries nor a net balance.
224 permits / 731 (30.6%) carry retained references: 211 candidate addresses (928 dwellings) and 13 parcel groups (1,110 dwellings). Two partial references (233 dwellings) are excluded from these totals. Large schemes remain unevenly documented.
Rue de Lyon, Bougeries, route de la Plaine and Fleurs: cadastral references, not built footprints or validated entrances. Collex: partial reference. Porte de France: no perimeter assigned. The premises planned at Bougeries are not counted as existing shops.
IGN: selected BPE destinations, good-quality points; BAN origins, not verified entrances. A missing time means “not documented”. Categories are not merged into a sufficiency score.
OSM: 22 pairs examined, 12 paths in the initial graph, 10 kept after the cautious filter. Network length / 4 km/h, no slope or waiting time. A missing path in the local graph does not prove a physical impossibility. No on-site check.
Switzerland: 59 establishments kept in the database; cautious classification by NOGA and documented check of public access. The airport’s main pharmacy is in the public zone. Other unconfirmed airport access points are excluded from the main view, without being labelled restricted.
Additional sources used in B.2
SDES · detailed Sitadel 2026-09
Completion recorded 2017–2025; file since 2013 · Accessed: 2026-10-14 · NUM_DAU, ETAT_DAU=6, DATE_REELLE_DAACT, NB_LGT_TOT_CREES; current status, no physical check
SDES · Sitadel data dictionary
Data dictionary consulted with the release · Accessed: 2026-10-14 · DAACT or survey; dwellings created per form; conversions possible
INSEE · census — Pays de Gex
2017 and 2023 · Accessed: 2026-10-14 · Population, stock, households; existing base unchanged
INSEE · BPE points
2025 · Accessed: 2026-10-14 · Selected map layer; quality B <100m according to documentation; not a complete inventory
IGN · BAN geocoding
Reference data current in October 2026 · Accessed: 2026-10-14 · Current address; number, municipality, score and inclusion checked
IGN · Cadastre API Carto
Current reference data · Accessed: 2026-10-14 · Three old references queried without result; no substitute centroid
IGN · Routes and isochrones
BD TOPO versions returned in October 2026 · Accessed: 2026-10-14 · Pedestrian profile, arrival at the service; snapped points checked
SITG / Canton of Geneva · REG
Extracted 2026-10-14; daily update announced · Accessed: 2026-10-14 · TYPE_REG=Etablissement; NOGA2008; external services only; access not validated
Saint-Genis-Pouilly — article on Bourdigny, Porte de France Nord context
9 September 2025 · Accessed: 2026-10-14 · Sector-level mention, with no cadastral link to the permit
Ornex · Municipal council
23 January 2025 · Accessed: 2026-10-14 · Rue des Bougeries context; no proof of delivery
OpenStreetMap · Walking network — attempt
Attempts 2026-10-14 · Accessed: 2026-10-14 · OSM France reference; Overpass attempts failed, OSM map API used successfully in B.2
DGFiP / Etalab · Vector cadastre and archives
2017-07, 2017-10, 2021-07, 2026-09 · Accessed: 2026-10-14 · Exact footprints of Sitadel references; not pedestrian entrances
OpenStreetMap · API map
Extracted 2026-10-14 · Accessed: 2026-10-14 · Local Franco-Swiss network; access rights and barriers explicitly filtered
DREAL ARA · 155 dwellings, Ornex
2021 · Accessed: 2026-10-14 · Project corroboration; no proof of delivery
Town of Ornex · Impact study, L’Orée des Chênes
September 2021 · Accessed: 2026-10-14 · Reference AN72, 155 dwellings, project provisions; not current state
Town of Ferney-Voltaire · Minutes of 1 March 2016
2016 · Accessed: 2026-10-14 · 178 dwellings and Collex/Levant location; corroboration
SEMCODA · Porte de France Nord
2 March 2023 · Accessed: 2026-10-14 · Sector and scheme mentioned; internal figures differ; no precise geometry
BOAMP · Notice 15-41704
2015 · Accessed: 2026-10-14 · Scheme of 457 dwellings; sector-level link
Grand Genève · Mategnin-Feuillasse
25 June 2021 · Accessed: 2026-10-14 · Walking and cycling link context; not all passages checked in 2026
Amavita · Champs-Fréchets
Accessed 2026 · Accessed: 2026-10-14 · Pharmacy open to the public, address consistent with REG
Pharmacie Grand-Saconnex · Contact page
Accessed 2026 · Accessed: 2026-10-14 · Address 169 route de Ferney; pharmacy open to the public
Genève Aéroport · Pharmacie Principale
Accessed 2026 · Accessed: 2026-10-14 · Public zone; no airport route validated
Documentary coverage by municipality
Coverage by scheme size
Additional sources accessed on 14.10.2026: SDES · Sitadel ; DGFiP / Etalab · cadastre, 2017, 2021 and 2026 releases ; SITG · REG 2026 ; IGN · 2026 network ; © OpenStreetMap contributors · ODbL. Individual sources and caveats included in the records.
Data, definitions and limitations
27 municipalities of Pays de Gex Agglo (EPCI 240100750). Population and housing: census 2017 and 2023, 2026 geography. Households: main tabulation, treated as main residences. Size: household population / households. Differences in the supplementary tabulation are not reconciled.
BPE counts and geolocated points do not have the same scope. Official map points may group several units. “Good” geolocation: error normally under 100 m, with no absolute guarantee; tile quantisation: about 10 m. Acceptable or poor coordinates are excluded from the published isochrones.
Polygons are calculated on the current IGN network, towards the destinations, then merged by category and time. They show neither the paths actually taken, nor opening hours, nor step-free access. Residential references are partial: no share of residents covered and no general rating of underserved neighbourhoods is calculated. Sitadel publishes declared completion dates, addresses and cadastral references; the retained reference points remain distinct from buildings and their actual access. An OAP or a permit does not prove delivery.
Schools: 2025 inventory only. Accessible green spaces, opening hours, capacities, childcare places, medical availability, prices and incomes: not measured. Sports facilities do not form an overall proximity index here.
The PLUiH serving as PLH, its OAPs and the SCoT provide the planning framework. The older diagnosis distinguishes town centres from peripheral retail hubs: its figures are not presented as a 2025 observation. A project listed in an OAP is not an observed delivery.
Rates: (2023−2017)/2017 × 100. Calculated on precise values, rounded for display. The 27 sums checked against the EPCI: difference under 0.001. The increase in stock can include construction, conversion, demolition and revisions; it is not treated as new dwellings.
Sources and traceability
Further research: Detailed Sitadel, 2026-09 release : declared completions, addresses and cadastre. Partial residential matching: documented references and candidate addresses are kept apart.