Massy
Massy, a city in France, had a population of 51,729 at the start of 2024. The foreign population count was 8,828 in 2021. The unemployment rate was 9.7% at the end of 2022.
Who Massy 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 9.4 km² in 2022. Population density was 5,365.5 people per km² in 2022.
Derived from the published population and foreign-resident counts.
| Metric | Value | Verified | Source |
|---|---|---|---|
| City area | 9.43 km2 | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Foreign residents | 8,828 people | 2026-07-152021 | Official sourceNationalité en 2021 — Base des tableaux détaillés — NAT1 Source-backed value |
| Population density | 5,365.5355 people/km² | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Population | 51,729 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 | 98.26 % | 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 | 9.7044 %country median 10.5% — 8% 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 9.79 µg/m³ in 2024. Annual NO₂ was 29.4 µg/m³ in 2024. Annual PM10 was 13.1 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 | 29.3938 µg/m³country median 14.8 — 98% 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 | 25.44 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 | 13.0849 µg/m³country median 14.3 — 8% 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 | 9.787 µg/m³country median 8.5 — 15% 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 |
| Average daytime high by month | Jan 7.2 · Feb 8.5 · Mar 12.5 · Apr 16.2 · May 19.8 · Jun 23.2 · Jul 25.8 · Aug 25.7 · Sep 21.5 · Oct 16.4 · Nov 10.9 · Dec 7.6 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station ORLY Source-backed value · nearest-station reading |
| Average night-time low by month | Jan 2.1 · Feb 2 · Mar 4.2 · Apr 6.4 · May 9.9 · Jun 13.1 · Jul 15 · Aug 14.6 · Sep 11.5 · Oct 8.7 · Nov 5 · Dec 2.7 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station ORLY Source-backed value · nearest-station reading |
| Average temperature by month | Jan 4.7 · Feb 5.2 · Mar 8.3 · Apr 11.3 · May 14.8 · Jun 18.2 · Jul 20.4 · Aug 20.2 · Sep 16.5 · Oct 12.6 · Nov 7.9 · Dec 5.2 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station ORLY Source-backed value · nearest-station reading |
| Average precipitation by month | Jan 51 · Feb 45.5 · Mar 46.4 · Apr 47.9 · May 66.9 · Jun 53.7 · Jul 53.8 · Aug 59.3 · Sep 48.3 · Oct 57.6 · Nov 58.4 · Dec 66.7 mm | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station VILLACOUBLAY Source-backed value · nearest-station reading |
| Average sunshine by month | Jan 58 · Feb 76 · Mar 133 · Apr 170 · May 198 · Jun 209 · Jul 217 · Aug 211 · Sep 171 · Oct 110 · Nov 62 · Dec 53 hours | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station VILLACOUBLAY Source-backed value · nearest-station reading |
Annual PM2.5 fell 42.4% between 2013 and 2024, from 17.0 to 9.8.
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?
17.1% of residents hold a foreign nationality — 8,828 people of 51,729 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 Massy?
The unemployment rate is 9.7044 %. Source: INSEE RP2022 ACT1 — population active by type of activity, commune, checked 2026-07-26.
Is the air quality good in Massy?
The annual PM2.5 mean is 9.787 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 Massy?
The published population is 51,729 people. Source: France official denominator source, checked 2026-07-14.
How many foreign residents live in Massy?
8,828 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.