--- entity_id: city:fr:insee5:78551 entity_type: city name: Saint-Germain-en-Laye country_code: FR country: France slug: saint-germain-en-laye canonical_url: https://immigrationdb.com/cities/fr/saint-germain-en-laye/ json_url: https://immigrationdb.com/data/cities/fr/saint-germain-en-laye.json markdown_url: https://immigrationdb.com/data/cities/fr/saint-germain-en-laye.md mcp_uri: immigrationdb://city/fr/saint-germain-en-laye 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/ --- # Saint-Germain-en-Laye The unemployment rate was 9.24% at the end of 2022. Saint-Germain-en-Laye is in France; its population was 45,931 at the start of 2024. In 2024, annual NO₂ was 17.2 µg/m³. The city covered 51.9 km² in 2022. Population density was 871.9 people per km² in 2022. ## Climate Annual PM2.5 was 8.5 µg/m³ in 2024. Annual PM10 was 12.8 µg/m³ in 2024. ## Immigration The foreign population count was 6,091 in 2021. ## Facts | Metric | metric_id | Value | Scope | Observed | Verified | Freshness | Lane | Source | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Foreign residents | `foreign_population_total` | 6,091 people | city | 2021 | 2026-07-15 | stale | verified | [1] | | Population | `population_total` | 45,931 people | municipality | 2025-01-01 | 2026-07-14 | aging | verified | [2] | | NO₂ — latest reading | `air_quality_no2_current_ug_m3` | 14.7 µg/m³ | city | 2026-07-15 | 2026-07-15 | fresh | verified | [3] | | Gigabit broadband availability | `broadband_gigabit_availability_percent` | 97.49 % | city | 2026-03-31 | 2026-07-15 | fresh | verified | [4] | | Unemployment rate | `unemployment_total_percent` | 9.239 % | city | 2022-12-31 | 2026-07-26 | stale | verified | [5] | | NO₂ — annual mean | `air_quality_no2_annual_ug_m3` | 17.2255 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | PM10 — annual mean | `air_quality_pm10_annual_ug_m3` | 12.7604 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | PM2.5 — annual mean | `air_quality_pm25_annual_ug_m3` | 8.5004 µg/m³ | city | 2024 | 2026-07-15 | stale | verified | [6] | | Average daytime high by month | `climate_monthly_high_c` | Jan 6.8 · Feb 8 · Mar 11.9 · Apr 15.4 · May 18.8 · Jun 22.1 · Jul 24.6 · Aug 24.6 · Sep 20.7 · Oct 15.8 · Nov 10.4 · Dec 7.2 °C | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [7] | | Average night-time low by month | `climate_monthly_low_c` | Jan 1.9 · Feb 1.8 · Mar 3.9 · Apr 6 · May 9.4 · Jun 12.5 · Jul 14.4 · Aug 14.2 · Sep 11.3 · Oct 8.5 · Nov 4.8 · Dec 2.4 °C | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [7] | | Average temperature by month | `climate_monthly_mean_c` | Jan 4.3 · Feb 4.9 · Mar 7.9 · Apr 10.7 · May 14.1 · Jun 17.3 · Jul 19.5 · Aug 19.4 · Sep 16 · Oct 12.2 · Nov 7.6 · Dec 4.8 °C | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [7] | | Average precipitation by month | `climate_monthly_precip_mm` | Jan 56.2 · Feb 49.9 · Mar 50.1 · Apr 49.9 · May 66 · Jun 57 · Jul 56.3 · Aug 56.1 · Sep 49.8 · Oct 61.8 · Nov 61.2 · Dec 72 mm | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [7] | | Average sunshine by month | `climate_monthly_sunshine_h` | Jan 57 · Feb 80 · Mar 133 · Apr 175 · May 201 · Jun 209 · Jul 222 · Aug 216 · Sep 176 · Oct 116 · Nov 67 · Dec 55 hours | nearest_station | 1991-12-31 | 2026-07-31 | stale | verified | [7] | | City area | `city_area_km2` | 51.94 km2 | place | 2022-01-01 | 2026-07-14 | stale | verified | [8] | | Population density | `population_density_per_km2` | 871.8906 people/km² | place | 2022-01-01 | 2026-07-14 | stale | verified | [8] | 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. WMO Climatological Normals 1991-2020 — station TRAPPES — Official source — https://www.ncei.noaa.gov/data/oceans/archive/arc0216/0253808/1.1/data/0-data/Region-6-WMO-Normals-9120/France/CSV/TRAPPES_07145.csv 8. 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. "Saint-Germain-en-Laye, France." Snapshot approved-static-bb6d69cd3c074ae2, last verified 2026-07-31. https://immigrationdb.com/cities/fr/saint-germain-en-laye/ 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/saint-germain-en-laye/ - JSON: https://immigrationdb.com/data/cities/fr/saint-germain-en-laye.json - Markdown: https://immigrationdb.com/data/cities/fr/saint-germain-en-laye.md - MCP resource: immigrationdb://city/fr/saint-germain-en-laye - 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