Seine-Saint-Denis: population, economy and official figures

Seine-Saint-Denis is a department in Ile de France, France. Seine-Saint-Denis had 1,731,789 residents on 1 January 2025, 13.8% of Ile de France and 2.51% of France; 5th largest of 101 departments in France.

In depth

• Economy, jobs and prices in Seine-Saint-Denis: GDP per person was 44,300 purchasing power standards (PPS) in 2024, 111% of the EU average (98% for France); 6th highest of 101 departments in France.
• Education in Seine-Saint-Denis: 20,745 pupils in 156 colleges in Seine-Saint-Denis sat the general series of the diplôme national du brevet (DNB) in 2025; 26 of those colleges were private schools under contract, which entered 13% of candidates (France: 22%).
• Poverty and living standards in Seine-Saint-Denis: On poverty, Seine-Saint-Denis ranked 2nd highest of 97 departements in 2023: 29.5% of residents lived on less than 60% of the national median living standard, against 15.9% in metropolitan France.
• Government budget and revenue in Seine-Saint-Denis: The departmental council of Seine-Saint-Denis spent €2.0 billion in 2025, or €1,203 per resident, 29th lowest of 94 departmental councils (average €1,260).
• Government and politics in Seine-Saint-Denis: Stéphane Troussel has been president of the departmental council of Seine-Saint-Denis since 1 July 2021, according to the national register of elected officials.

Figures come from France's own official statistics and from Eurostat's regional statistics for NUTS 3 areas. Comparisons with the EU average use purchasing power standards (PPS), which adjust for price differences.

Other departments in Ile de France

• Paris 2,065,560
• Hauts-de-Seine 1,668,275
• Yvelines 1,504,565
• Seine-et-Marne 1,490,900
• Val-de-Marne 1,434,875
• Essonne 1,356,114
• Val-d'Oise 1,297,210

Up a level: Ile de France · all regions of France · how local power works in France

Sources

• Eurostat: Eurostat dataset demo_r_pjangrp3: Population on 1 January (NUTS 3), read 23 October 2026 · saved copy (SHA-256 4c748d3cba3a…)
• Eurostat: Eurostat dataset demo_r_d3dens: Population density, read 23 October 2026 · saved copy (SHA-256 f4b59fe9d121…)
• Eurostat: Eurostat dataset nama_10r_3gdp: GDP per person, PPS (NUTS 3), read 23 October 2026 · saved copy (SHA-256 3bf0fc662f56…)
• Eurostat: Eurostat dataset nama_10r_3gdp: GDP, million euros (NUTS 3), read 23 October 2026 · saved copy (SHA-256 096e15e5fdb3…)
• Eurostat: Eurostat dataset nama_10r_3empers: Employment, thousand people (NUTS 3), read 23 October 2026 · saved copy (SHA-256 664e4e3a6dc0…)
• Eurostat: Eurostat dataset demo_r_pjanind3: Median age of the population (NUTS 3), read 23 October 2026 · saved copy (SHA-256 7bf6ade55a0d…)
• Eurostat: Eurostat dataset demo_r_pjanind3: Share of people aged 65 or over (NUTS 3), read 23 October 2026 · saved copy (SHA-256 17aa0d08ab9c…)
• Eurostat: Eurostat dataset demo_r_fagec3: Live births (NUTS 3), read 23 October 2026 · saved copy (SHA-256 cfda9b5f4ebd…)
• Eurostat: Eurostat dataset reg_area3: Area, read 23 October 2026 · saved copy (SHA-256 75302b0aafe9…)
• Eurostat: Eurostat dataset nama_10r_3empers: Employment (thousand persons) by NUTS 3 region and industry, read 23 October 2026 · saved copy (SHA-256 222a97c302d3…)
• Eurostat: Eurostat dataset nama_10r_3gva: Gross value added at basic prices by NUTS 3 region and industry, read 23 October 2026 · saved copy (SHA-256 c656e8563bdf…)
• Eurostat: Eurostat dataset demo_r_gind3: Population change: demographic balance and crude rates by NUTS 3 region, read 23 October 2026 · saved copy (SHA-256 7548e948e15c…)
• Ministère de l'Éducation nationale, DEPP: Indicateurs de valeur ajoutée des collèges, sessions 2024 and 2025 of the diplôme national du brevet, read 23 October 2026 · saved copy (SHA-256 4022d6fb202a…)
• Ministère de l'Intérieur, Service statistique ministériel de la sécurité intérieure (SSMSI): Base statistique départementale de la délinquance enregistrée par la police et la gendarmerie nationales, 2016-2025, read 23 October 2026 · saved copy (SHA-256 05fd70cbfe72…)
• INSEE: Indicateurs sur les revenus et la pauvreté au niveau local en 2023 (Filosofi 2023, base FILOSOFI_CC), read 23 October 2026 · saved copy (SHA-256 f3822a78e3f5…)
• Ministère de l'Intérieur: Répertoire national des élus: conseillers départementaux (mise à jour du 11 août 2026), read 23 October 2026 · saved copy (SHA-256 7af7a47ebab9…)
• Observatoire des finances et de la gestion publique locales (OFGL), from DGFiP accounts: Comptes des départements 2012-2025 (budgets principaux, 2019-2025 extract), read 23 October 2026 · saved copy (SHA-256 3c1b2d8de45d…)

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