Blois
The unemployment rate was 16.4% at the end of 2022. Blois is in France; its population was 47,219 at the start of 2024. Annual NO₂ was 9.59 µg/m³ in 2024. The city covered 37.5 km² in 2022. Population density was 1,257.1 people per km² in 2022.
Higher unemployment than 86% of French cities that publish it and cleaner air than 90% of French cities that publish it.
Who Blois 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 | 37.46 km2 | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Foreign residents | 7,956 people | 2026-07-152021 | Official sourceNationalité en 2021 — Base des tableaux détaillés — NAT1 Source-backed value |
| Population density | 1,257.1276 people/km² | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Population | 47,219 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 | 96.97 % | 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 | 16.3575 %country median 10.5% — 55% above | 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 6.93 µg/m³ in 2024. Annual PM10 was 10.9 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 | 9.5863 µg/m³country median 14.8 — 35% 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 | 13.45 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 | 10.912 µg/m³country median 14.3 — 24% 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 | 6.9293 µg/m³country median 8.5 — 18% 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 7.4 · Feb 8.7 · Mar 12.8 · Apr 16.1 · May 19.7 · Jun 23.6 · Jul 26.2 · Aug 26.1 · Sep 22 · Oct 16.8 · Nov 11.1 · Dec 7.8 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station BLOIS Source-backed value · nearest-station reading |
| Average night-time low by month | Jan 1.8 · Feb 1.5 · Mar 3.4 · Apr 5.1 · May 8.5 · Jun 11.7 · Jul 13.4 · Aug 13.4 · Sep 10.6 · Oct 8.1 · Nov 4.5 · Dec 2.2 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station BLOIS Source-backed value · nearest-station reading |
| Average temperature by month | Jan 4.6 · Feb 5.1 · Mar 8.1 · Apr 10.6 · May 14.1 · Jun 17.6 · Jul 19.8 · Aug 19.8 · Sep 16.3 · Oct 12.5 · Nov 7.8 · Dec 5 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station BLOIS Source-backed value · nearest-station reading |
| Average precipitation by month | Jan 52.5 · Feb 46.4 · Mar 47.1 · Apr 50.8 · May 61.2 · Jun 51.5 · Jul 51.7 · Aug 42.1 · Sep 49.3 · Oct 62 · Nov 62.1 · Dec 64.7 mm | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station BLOIS Source-backed value · nearest-station reading |
| Average sunshine by month | Jan 62 · Feb 92 · Mar 147 · Apr 187 · May 211 · Jun 210 · Jul 230 · Aug 228 · Sep 186 · Oct 121 · Nov 74 · Dec 59 hours | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station BLOIS Source-backed value · nearest-station reading |
Annual PM2.5 fell 13.4% between 2020 and 2024, from 8.0 to 6.9.
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?
16.8% of residents hold a foreign nationality — 7,956 people of 47,219 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 Blois?
The unemployment rate is 16.3575 %. Source: INSEE RP2022 ACT1 — population active by type of activity, commune, checked 2026-07-26.
Is the air quality good in Blois?
The annual PM2.5 mean is 6.9293 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 Blois?
The published population is 47,219 people. Source: France official denominator source, checked 2026-07-14.
How many foreign residents live in Blois?
7,956 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.