Boulogne-Billancourt
Boulogne-Billancourt is a city in France, with a population of 119,808 at the start of 2024. In 2021, the foreign population was 14,032. A monthly estimate placed internet service at €23 in December 2022. A monthly estimate placed basic utilities for an 85 m² home at €135 in December 2022.
Who Boulogne-Billancourt 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 6.2 km² in 2024. Population density was 19,482.2 people per km² in 2022.
Derived from the published population and foreign-resident counts.
| Metric | Value | Verified | Source |
|---|---|---|---|
| City area | 6.2 km2 | 2026-06-302024 | Official sourceFrance city identity collection Source-backed value · place |
| Foreign residents | 14,032 people | 2026-07-152021 | Official sourceNationalité en 2021 — Base des tableaux détaillés — NAT1 Source-backed value |
| Population density | 19,482.1718 people/km² | 2026-07-142022 | Official sourceA-ccepted source for city area and derived population density Source-backed value · place |
| Population | 119,019 people | 2026-07-14Aging | Official sourceFrance official denominator source Source-backed value |
Cost of living
Published city cost observations. Some items come from the supplemental estimate lane and are not official statistics.
| Metric | Value | Verified | Source |
|---|---|---|---|
| Fitness club membership, monthly | 54.7276 EUR/month | 2026-07-272022 | Supplemental estimateGlobal Cost of Living — Kaggle snapshot v2 Supplemental context |
| Internet, 60 Mbps unlimited | 22.8921 EUR/month | 2026-07-272022 | Supplemental estimateGlobal Cost of Living — Kaggle snapshot v2 Supplemental context |
| Meal at an inexpensive restaurant | 15.9225 EUR | 2026-07-272022 | Supplemental estimateGlobal Cost of Living — Kaggle snapshot v2 Supplemental context |
| Monthly transport pass | 74.8337 EUR/month | 2026-07-272022 | Supplemental estimateGlobal Cost of Living — Kaggle snapshot v2 Supplemental context |
| Basic utilities, 85 m² home | 135.3127 EUR/month | 2026-07-272022 | Supplemental estimateGlobal Cost of Living — Kaggle snapshot v2 Supplemental context |
Work and income
The unemployment rate was 8.6% at the end of 2022.
Published unemployment rates for cities in the same country.
| Metric | Value | Verified | Source |
|---|---|---|---|
| Gigabit broadband availability | 98.57 % | 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 | 8.6042 %country median 10.5% — 18% 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 8.81 µg/m³ in 2024. Annual NO₂ was 19.3 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 | 19.2745 µg/m³country median 14.8 — 30% 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 | 22.35 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 | 19 µg/m³ | 2026-08-012024 | Official sourceEEA air quality statistics — FR PM10 annual mean 2024 (station Place de l'Opéra) Source-backed value · nearest-station reading |
| PM2.5 — annual mean | 8.8102 µg/m³country median 8.5 — 4% 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 7.6 · Feb 8.8 · Mar 12.8 · Apr 16.6 · May 20.2 · Jun 23.4 · Jul 25.7 · Aug 25.6 · Sep 21.5 · Oct 16.5 · Nov 11.1 · Dec 8 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station PARIS-MONTSOURIS Source-backed value · nearest-station reading |
| Average night-time low by month | Jan 3.2 · Feb 3.3 · Mar 5.6 · Apr 7.9 · May 11.1 · Jun 14.2 · Jul 16.2 · Aug 16 · Sep 13 · Oct 9.9 · Nov 6.2 · Dec 3.8 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station PARIS-MONTSOURIS Source-backed value · nearest-station reading |
| Average temperature by month | Jan 5.4 · Feb 6 · Mar 9.2 · Apr 12.2 · May 15.6 · Jun 18.8 · Jul 20.9 · Aug 20.8 · Sep 17.2 · Oct 13.2 · Nov 8.7 · Dec 5.9 °C | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station PARIS-MONTSOURIS Source-backed value · nearest-station reading |
| Average precipitation by month | Jan 47.6 · Feb 41.8 · Mar 45.2 · Apr 45.8 · May 69 · Jun 51.3 · Jul 59.4 · Aug 58 · Sep 44.7 · Oct 55.2 · Nov 54.3 · Dec 62 mm | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station PARIS-MONTSOURIS Source-backed value · nearest-station reading |
| Average sunshine by month | Jan 59 · Feb 83 · Mar 134 · Apr 177 · May 201 · Jun 203 · Jul 222 · Aug 215 · Sep 174 · Oct 118 · Nov 69 · Dec 56 hours | 2026-07-311991 | Official sourceWMO Climatological Normals 1991-2020 — station PARIS-MONTSOURIS Source-backed value · nearest-station reading |
Annual PM2.5 fell 44.9% between 2013 and 2024, from 16.0 to 8.8.
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?
11.8% of residents hold a foreign nationality — 14,032 people of 119,019 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 Boulogne-Billancourt?
The unemployment rate is 8.6042 %. Source: INSEE RP2022 ACT1 — population active by type of activity, commune, checked 2026-07-26.
Is the air quality good in Boulogne-Billancourt?
The annual PM2.5 mean is 8.8102 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 Boulogne-Billancourt?
The published population is 119,019 people. Source: France official denominator source, checked 2026-07-14.
How many foreign residents live in Boulogne-Billancourt?
14,032 people residents hold a foreign nationality. Source: Nationalité en 2021 — Base des tableaux détaillés — NAT1, checked 2026-07-15.
How much is public transport in Boulogne-Billancourt?
A monthly transport pass is 74.8337 EUR/month. This is a supplemental estimate, not an official municipal measurement. Source: Global Cost of Living — Kaggle snapshot v2, checked 2026-07-27.
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.