Largest city in the Seine-Saint-Denis department: the 2026 ranking

The 39 towns of the Seine-Saint-Denis department (93) ranked by population, area and density, based on the official INSEE population figures in force in 2026.

The largest city in the Seine-Saint-Denis department is Saint-Denis, with 149,936 inhabitants (ranked 23rd in France by population). The largest town by area is Tremblay-en-France (22 km²). The most densely populated is Le Pré-Saint-Gervais, with 24,356 inhabitants per km². At the other end of the ranking, Coubron has only 5,217 inhabitants.

The Seine-Saint-Denis department has 1,710,659 inhabitants over 236 km², a density of 7,242 inhabitants per km², 66 times the national average (110 per km²). It accounts for 13.6% of the population of Île-de-France, the region it belongs to: see the ranking of the largest cities in Île-de-France.

The 20 largest cities in the Seine-Saint-Denis department by population

# Town Population km² per km² France rank
1 Saint-Denis 149,936 16 9,508 23rd
2 Montreuil 112,549 8.9 12,618 37th
3 Aubervilliers 88,529 5.8 15,370 52nd
4 Aulnay-sous-Bois 87,951 16 5,429 53rd
5 Noisy-le-Grand 73,408 13 5,669 72nd
6 Drancy 72,583 7.8 9,353 73rd
7 Le Blanc-Mesnil 62,547 8.1 7,770 93rd
8 Pantin 62,083 5.0 12,392 94th
9 Bobigny 57,035 6.8 8,425 109th
10 Saint-Ouen-sur-Seine 53,747 4.3 12,470 121st
11 Épinay-sur-Seine 52,944 4.6 11,585 124th
12 Sevran 52,682 7.3 7,237 126th
13 Bondy 50,762 5.5 9,280 135th
14 Livry-Gargan 47,453 7.4 6,430 146th
15 Rosny-sous-Bois 47,368 5.9 8,015 148th
16 La Courneuve 47,285 7.5 6,288 150th
17 Noisy-le-Sec 45,634 5.0 9,054 163rd
18 Bagnolet 43,234 2.6 16,823 182nd
19 Gagny 42,524 6.8 6,226 185th
20 Villepinte 41,579 10 4,010 191st

Largest towns by area in the Seine-Saint-Denis department

# Town Population km² per km² France rank
1 Tremblay-en-France 38,519 22 1,717 6,689th
2 Aulnay-sous-Bois 87,951 16 5,429 10,981st
3 Saint-Denis 149,936 16 9,508 11,375th
4 Noisy-le-Grand 73,408 13 5,669 14,498th
5 Villepinte 41,579 10 4,010 18,413th
6 Montreuil 112,549 8.9 12,618 21,090th
7 Le Blanc-Mesnil 62,547 8.1 7,770 22,755th
8 Drancy 72,583 7.8 9,353 23,355th
9 La Courneuve 47,285 7.5 6,288 23,878th
10 Livry-Gargan 47,453 7.4 6,430 24,170th

Most densely populated towns in the Seine-Saint-Denis department

# Town Population km² per km² France rank
1 Le Pré-Saint-Gervais 17,049 0.7 24,356 3rd
2 Les Lilas 23,968 1.3 19,022 11th
3 Bagnolet 43,234 2.6 16,823 15th
4 Aubervilliers 88,529 5.8 15,370 20th
5 Montreuil 112,549 8.9 12,618 26th
6 Saint-Ouen-sur-Seine 53,747 4.3 12,470 27th
7 Pantin 62,083 5.0 12,392 29th
8 Épinay-sur-Seine 52,944 4.6 11,585 32nd
9 Romainville 37,224 3.4 10,821 38th
10 Saint-Denis 149,936 16 9,508 47th

All towns in the Seine-Saint-Denis department (39)

INSEE total population in parentheses. Each town page gives its area, density, national and departmental rankings, and neighboring towns.

Other departments in Île-de-France

Paris (75) Seine-et-Marne (77) Yvelines (78) Essonne (91) Hauts-de-Seine (92) Val-de-Marne (94) Val-d'Oise (95) All departments

Sources: INSEE, official population figures in force on January 1, 2026 (total population); land area: IGN / Observatoire des territoires. Rankings computed across the 34,858 communes in the database.

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