Saint-Herblain
Saint-Herblain is a city in France. Annual PM2.5 was 8.17 µg/m³ in 2024. Annual PM10 was 14.2 µg/m³ in 2024. The unemployment rate was 11.3% at the end of 2022. Annual NO₂ was 14 µg/m³ in 2024. The foreign population count was 4,695 in 2021. At the start of 2024, Saint-Herblain had a population of 50,973.
Who Saint-Herblain may suit
Relative profile scores use comparable published values. They are a decision aid, not a personal recommendation.
Population and city profile
The city covered 30 km² in 2022. Population density was 1,684.2 people per km² in 2022.
Derived from the published population and foreign-resident counts.
| Metric | Value | Verified | Source |
|---|---|---|---|
| City area | 30.02 km2 | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Foreign residents | 4,695 people | 2026-07-152021 | Official sourceNationalité en 2021 — Base des tableaux détaillés — NAT1 Source-backed value |
| Population density | 1,684.2438 people/km² | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Population | 50,973 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 | 97.99 % | 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 | 11.2927 %country median 10.5% — 7% above | 2026-07-262022 | Official sourceINSEE RP2022 ACT1 — population active by type of activity, commune Source-backed value |
Climate and air quality
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 | 13.9887 µg/m³country median 14.8 — 6% 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 |
| NO₂ — latest reading | 19.275 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 | 14.2297 µg/m³country median 14.3 — 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 |
| PM2.5 — annual mean | 8.1698 µg/m³country median 8.5 — 4% 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 |
| Average daytime high by month | Jan 9.3 · Feb 10.5 · Mar 13.5 · Apr 16.2 · May 19.6 · Jun 23 · Jul 25.1 · Aug 25.4 · Sep 22.4 · Oct 17.6 · Nov 12.9 · Dec 9.8 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station NANTES-BOUGUENAIS Source-backed value · nearest-station reading |
| Average night-time low by month | Jan 3.4 · Feb 3 · Mar 4.9 · Apr 6.6 · May 9.8 · Jun 12.7 · Jul 14.3 · Aug 14.2 · Sep 11.8 · Oct 9.5 · Nov 5.9 · Dec 3.7 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station NANTES-BOUGUENAIS Source-backed value · nearest-station reading |
| Average temperature by month | Jan 6.4 · Feb 6.7 · Mar 9.2 · Apr 11.4 · May 14.7 · Jun 17.8 · Jul 19.7 · Aug 19.8 · Sep 17.1 · Oct 13.5 · Nov 9.4 · Dec 6.7 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station NANTES-BOUGUENAIS Source-backed value · nearest-station reading |
| Average precipitation by month | Jan 87.9 · Feb 67.5 · Mar 58.4 · Apr 58.3 · May 61 · Jun 48.5 · Jul 44.2 · Aug 50.3 · Sep 59.5 · Oct 88.8 · Nov 94.1 · Dec 101 mm | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station NANTES-BOUGUENAIS Source-backed value · nearest-station reading |
| Average sunshine by month | Jan 72 · Feb 102 · Mar 147 · Apr 182 · May 203 · Jun 213 · Jul 229 · Aug 232 · Sep 198 · Oct 122 · Nov 91 · Dec 77 hours | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station NANTES-BOUGUENAIS Source-backed value · nearest-station reading |
Annual PM2.5 fell 41.6% between 2013 and 2024, from 14.0 to 8.2.
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?
9.2% of residents hold a foreign nationality — 4,695 people of 50,973 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-Herblain?
The unemployment rate is 11.2927 %. Source: INSEE RP2022 ACT1 — population active by type of activity, commune, checked 2026-07-26.
Is the air quality good in Saint-Herblain?
The annual PM2.5 mean is 8.1698 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-Herblain?
The published population is 50,973 people. Source: France official denominator source, checked 2026-07-14.
How many foreign residents live in Saint-Herblain?
4,695 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.