--- entity_id: city:fr:insee5:85191 entity_type: city name: La Roche-sur-Yon country_code: FR country: France slug: la-roche-sur-yon canonical_url: https://immigrationdb.com/cities/fr/la-roche-sur-yon/ json_url: https://immigrationdb.com/data/cities/fr/la-roche-sur-yon.json markdown_url: https://immigrationdb.com/data/cities/fr/la-roche-sur-yon.md mcp_uri: immigrationdb://city/fr/la-roche-sur-yon snapshot_id: approved-static-bb6d69cd3c074ae2 generated_at: 2026-08-04 last_verified: 2026-07-31 fact_count: 15 metric_dictionary_url: https://immigrationdb.com/data/metrics.json license_url: https://immigrationdb.com/about/copyright/ --- # La Roche-sur-Yon La Roche-sur-Yon is a city in France, with a population of 54,849 at the start of 2024. For La Roche-sur-Yon, the unemployment rate was 12.1% at the end of 2022. Monthly precipitation was 94.8 mm in January and 47.9 mm in July. The city covered 87.5 km² in 2022. Population density was 625 people per km² in 2022. ## Climate Average high temperatures were 9°C in January and 24.9°C in July. Annual PM2.5 was 7.47 µg/m³ in 2024. ## Immigration The foreign population count was 3,181 in 2021. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Foreign residents | `foreign_population_total` | 3,181 people | city | 2021 | 2026-07-15 | stale | verified | [1] | | Population | `population_total` | 54,849 people | municipality | 2025-01-01 | 2026-07-14 | aging | verified | [2] | | NO₂ — latest reading | `air_quality_no2_current_ug_m3` | 23.6 µg/m³ | city | 2026-07-15 | 2026-07-15 | fresh | verified | [3] | | Gigabit broadband availability | `broadband_gigabit_availability_percent` | 95.81 % | city | 2026-03-31 | 2026-07-15 | fresh | verified | [4] | | Unemployment rate | `unemployment_total_percent` | 12.1313 % | city | 2022-12-31 | 2026-07-26 | stale | verified | [5] | | NO₂ — annual mean | `air_quality_no2_annual_ug_m3` | 5.8151 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | PM10 — annual mean | `air_quality_pm10_annual_ug_m3` | 11.8713 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 7.4662 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | Average daytime high by month | `climate_monthly_high_c` | Jan 9 · Feb 10.1 · Mar 13.1 · Apr 15.7 · May 19.3 · Jun 22.8 · Jul 24.9 · Aug 25.1 · Sep 22.1 · Oct 17.3 · Nov 12.5 · Dec 9.5 °C | city | 2020-12-31 | 2026-07-27 | stale | verified | [7] | | Average night-time low by month | `climate_monthly_low_c` | Jan 3.2 · Feb 2.7 · Mar 4.4 · Apr 6 · May 9.3 · Jun 12.3 · Jul 13.9 · Aug 13.9 · Sep 11.4 · Oct 9.4 · Nov 5.9 · Dec 3.6 °C | city | 2020-12-31 | 2026-07-27 | stale | verified | [7] | | Average temperature by month | `climate_monthly_mean_c` | Jan 6.1 · Feb 6.4 · Mar 8.8 · Apr 10.9 · May 14.3 · Jun 17.5 · Jul 19.4 · Aug 19.5 · Sep 16.8 · Oct 13.4 · Nov 9.2 · Dec 6.5 °C | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [8] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 94.8 · Feb 70.5 · Mar 64.4 · Apr 65.9 · May 62.4 · Jun 45.3 · Jul 47.9 · Aug 52.1 · Sep 71.9 · Oct 98.7 · Nov 108.1 · Dec 103.5 mm | city | 2020-12-31 | 2026-07-27 | stale | verified | [7] | | Average sunshine by month | `climate_monthly_sunshine_h` | Jan 73.583 · Feb 106.4 · Mar 151.05 · Apr 183.633 · May 210.783 · Jun 229.017 · Jul 241.383 · Aug 235.733 · Sep 199.133 · Oct 128.767 · Nov 88.85 · Dec 74.033 hours | city | 2020-12-31 | 2026-07-27 | stale | verified | [7] | | City area | `city_area_km2` | 87.52 km2 | place | 2022-01-01 | 2026-07-14 | stale | verified | [9] | | Population density | `population_density_per_km2` | 624.9886 people/km² | place | 2022-01-01 | 2026-07-14 | stale | verified | [9] | Every row keeps the value, unit, geographic scope, observation date, verification date and the numbered source below. A missing metric means the city does not publish it; nothing is imputed. ## Sources 1. Nationalité en 2021 — Base des tableaux détaillés — NAT1 — Official source — https://www.insee.fr/fr/statistiques/fichier/8202752/TD_NAT1_2021_csv.zip 2. France official denominator source — Official source — https://www.insee.fr/fr/statistiques/fichier/8680726/ensemble.zip 3. Latest valid NO2 hourly station observation on the official LCSQA E2 current-day extract, mapped to the exact INSEE centre through an exact normalized station-name crosswalk to EEA station metadata. — Official source — https://files.data.gouv.fr/ineris/lcsqa/concentrations-de-polluants-atmospheriques-reglementes/temps-reel/2026/FR_E2_2026-07-15.csv 4. Independent ARCEP municipal count of premises eligible for the >=1 Gbit/s fixed advertised-speed class, divided by the ARCEP type=all municipal premises denominator. This is availability/eligibility, not adoption, measured speed, FTTH-only coverage or mobile coverage. — Official source — https://data.arcep.fr/fixe/maconnexioninternet/statistiques/2026_T1/commune/commune_debit.csv 5. INSEE RP2022 ACT1 — population active by type of activity, commune — Official source — https://www.insee.fr/fr/statistiques/fichier/8581605/TD_ACT1_2022_csv.zip 6. 2024 validated hourly NO2 station observations transformed to the exact INSEE commune centre by deterministic nearest-station selection and equal-weight aggregation. — Official source — https://air.discomap.eea.europa.eu/arcgis/rest/services/AirQuality/AirQualityDownloadServiceEUMonitoringStations/MapServer 7. Météo-France climate normal — mean monthly maximum air temperature, LA ROCHE SUR YON, 1991-2020 — Official source — https://meteofrance.com/climat/normales/france/pays-de-la-loire/LA%20ROCHE%20SUR%20YON 8. WMO Climatological Normals 1991-2020 — station LA_ROCHE_SUR_YON — Official source — https://www.ncei.noaa.gov/data/oceans/archive/arc0216/0253808/1.1/data/0-data/Region-6-WMO-Normals-9120/France/CSV/LA_ROCHE_SUR_YON_07306.csv 9. A-ccepted source for city area and derived population density — Official source — https://www.insee.fr/fr/statistiques/fichier/2521169/base_cc_comparateur_csv.zip ## Cite ImmigrationDB. "La Roche-sur-Yon, France." Snapshot approved-static-bb6d69cd3c074ae2, last verified 2026-07-31. https://immigrationdb.com/cities/fr/la-roche-sur-yon/ Reuse requires the direct source URL, the observation date and a link back to the ImmigrationDB page: https://immigrationdb.com/about/copyright/ ## Data - HTML: https://immigrationdb.com/cities/fr/la-roche-sur-yon/ - JSON: https://immigrationdb.com/data/cities/fr/la-roche-sur-yon.json - Markdown: https://immigrationdb.com/data/cities/fr/la-roche-sur-yon.md - MCP resource: immigrationdb://city/fr/la-roche-sur-yon - Metric dictionary: https://immigrationdb.com/data/metrics.json - All published city facts, one row each: https://immigrationdb.com/data/facts.ndjson.gz - Release catalog: https://immigrationdb.com/data/catalog.json