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.
Who Saint-Germain-en-Laye may suit
Relative profile scores use comparable published values. They are a decision aid, not a personal recommendation.
Population and city profile
Derived from the published population and foreign-resident counts.
| Metric | Value | Verified | Source |
|---|---|---|---|
| City area | 51.94 km2 | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Foreign residents | 6,091 people | 2026-07-152021 | Official sourceNationalité en 2021 — Base des tableaux détaillés — NAT1 Source-backed value |
| Population density | 871.8906 people/km² | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Population | 45,931 people | 2026-07-14Aging | Official sourceFrance official denominator source Source-backed value |
Work and income
Published unemployment rates for cities in the same country.
| Metric | Value | Verified | Source |
|---|---|---|---|
| Gigabit broadband availability | 97.49 % | 2026-07-15Fresh | Official sourceIndependent 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. Source-backed value |
| Unemployment rate | 9.239 %country median 10.5% — 12% below | 2026-07-262022 | Official sourceINSEE RP2022 ACT1 — population active by type of activity, commune Source-backed value |
Climate and air quality
Annual PM2.5 was 8.5 µg/m³ in 2024. Annual PM10 was 12.8 µg/m³ in 2024.
Published monthly climate normals for this city.
Published monthly climate normals for this city.
Published monthly climate normals for this city.
City values from the published air-quality observations. WHO 2021 guidelines and EU limit values are published constants.
Published annual means from the same national measurement network.
| Metric | Value | Verified | Source |
|---|---|---|---|
| NO₂ — annual mean | 17.2255 µg/m³country median 14.8 — 16% above | 2026-07-152024 | Official source2024 validated hourly NO2 station observations transformed to the exact INSEE commune centre by deterministic nearest-station selection and equal-weight aggregation. Source-backed value |
| NO₂ — latest reading | 14.7 µg/m³ | 2026-07-15Fresh | Official sourceLatest 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. Source-backed value |
| PM10 — annual mean | 12.7604 µg/m³country median 14.3 — 11% below | 2026-07-152024 | Official source2024 validated hourly NO2 station observations transformed to the exact INSEE commune centre by deterministic nearest-station selection and equal-weight aggregation. Source-backed value |
| PM2.5 — annual mean | 8.5004 µg/m³country median 8.5 — about the same | 2026-07-152024 | Official source2024 validated hourly NO2 station observations transformed to the exact INSEE commune centre by deterministic nearest-station selection and equal-weight aggregation. Source-backed value |
| Average daytime high by month | 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 | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station TRAPPES Source-backed value · nearest-station reading |
| Average night-time low by month | 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 | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station TRAPPES Source-backed value · nearest-station reading |
| Average temperature by month | 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 | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station TRAPPES Source-backed value · nearest-station reading |
| Average precipitation by month | 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 | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station TRAPPES Source-backed value · nearest-station reading |
| Average sunshine by month | 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 | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station TRAPPES Source-backed value · nearest-station reading |
Annual PM2.5 fell 46.9% between 2013 and 2024, from 16.0 to 8.5.
Each point keeps the source and period it was published with.
Worked out from these numbers
Arithmetic on the published values above. Each one names what it assumed.
How international is the population?
13.3% of residents hold a foreign nationality — 6,091 people of 45,931 people. This counts nationality, not place of birth, so long-settled residents who naturalised are not in it.
Common questions
Answered from the published values on this page, each with its source and date.
What is the unemployment rate in Saint-Germain-en-Laye?
The unemployment rate is 9.239 %. Source: INSEE RP2022 ACT1 — population active by type of activity, commune, checked 2026-07-26.
Is the air quality good in Saint-Germain-en-Laye?
The annual PM2.5 mean is 8.5004 µg/m³. The WHO 2021 guideline is 5 µg/m³ and the EU limit value is 25 µg/m³, so this reading is above the WHO guideline but within the EU limit. Source: 2024 validated hourly NO2 station observations transformed to the exact INSEE commune centre by deterministic nearest-station selection and equal-weight aggregation., checked 2026-07-15.
How many people live in Saint-Germain-en-Laye?
The published population is 45,931 people. Source: France official denominator source, checked 2026-07-14.
How many foreign residents live in Saint-Germain-en-Laye?
6,091 people residents hold a foreign nationality. Source: Nationalité en 2021 — Base des tableaux détaillés — NAT1, checked 2026-07-15.
Cities of a similar size in France
Closest published populations, for a like-for-like comparison.
Sources
Spotted a number that looks wrong? Every value here carries its source and date — tell us what you found and we will re-check it against the source.