What is the largest city of Yvelines?

Versailles, with 84,095 inhabitants, ahead of Sartrouville (52,763).

How many cities does Yvelines have?

42 of its communes are listed here: every one over 10,000 inhabitants, plus the smaller ones that are household names. Yvelines has far more communes than that.

Which city of Yvelines is the densest?

Houilles, at 7,593 inhab./km², against 2,458 inhab./km² for the cities of Yvelines taken together.

Which region is Yvelines in?

Île-de-France, which this dataset carries 266 cities of.

Which cities are in Yvelines?

Versailles (84,095), Sartrouville (52,763), Saint-Germain-en-Laye (45,931), Mantes-la-Jolie (43,526), Poissy (40,983), Conflans-Sainte-Honorine (36,958), Trappes (34,689), Les Mureaux (34,632), Houilles (33,983), Montigny-le-Bretonneux (32,465). The full table is on this page, with the figures for each.

Le Bon Rang

By department · Department 78

Cities of Yvelines (78)

Yvelines carries 42 cities in this dataset, 1,050,222 inhabitants between them. The largest is Versailles (84,095), the smallest Voisins-le-Bretonneux (10,624).

Could you put Houilles, Poissy and Versailles in this ranking's order? Le Bon Rang is that game, every day. Play today's game

Cities42
Inhabitants1,050,222
DensestHouilles7,593 inhab./km²
Largest areaSaint-Germain-en-Laye53.1 km²

The 42 cities of Yvelines, largest first
Rank	City	Population	Density inhab./km²	Area km²
1	Versailles	84,095	3,216	26.2
2	Sartrouville	52,763	6,229	8.5
3	Saint-Germain-en-Laye	45,931	865	53.1
4	Mantes-la-Jolie	43,526	4,613	9.4
5	Poissy	40,983	3,181	12.9
6	Conflans-Sainte-Honorine	36,958	3,742	9.9
7	Trappes	34,689	2,533	13.7
8	Les Mureaux	34,632	2,799	12.4
9	Houilles	33,983	7,593	4.5
10	Montigny-le-Bretonneux	32,465	3,034	10.7
11	Plaisir	31,811	1,802	17.7
12	Le Chesnay-Rocquencourt	30,689	4,289	7.2
13	Chatou	30,598	6,038	5.1
14	Guyancourt	29,778	2,256	13.2
15	Rambouillet	27,724	773	35.9
16	Élancourt	26,365	2,853	9.2
17	Maisons-Laffitte	23,093	3,331	6.9
18	Vélizy-Villacoublay	23,011	2,576	8.9
19	Mantes-la-Ville	22,332	3,577	6.2
20	Achères	22,241	2,347	9.5
21	Saint-Cyr-l'École	21,268	4,164	5.1
22	Carrières-sous-Poissy	20,825	2,865	7.3
23	Maurepas	20,629	2,453	8.4
24	La Celle-Saint-Cloud	20,460	3,504	5.8
25	Limay	17,885	1,561	11.5
26	Viroflay	17,237	4,955	3.5
27	Les Clayes-sous-Bois	16,804	2,752	6.1
28	Marly-le-Roi	16,756	2,507	6.7
29	Bois-d'Arcy	16,586	2,966	5.6
30	Verneuil-sur-Seine	16,280	1,697	9.6
31	Le Pecq	16,059	5,566	2.9
32	Le Vésinet	15,554	3,098	5
33	Carrières-sur-Seine	14,791	2,903	5.1
34	Montesson	14,549	1,983	7.3
35	Andrésy	13,834	2,003	6.9
36	Fontenay-le-Fleury	13,680	2,457	5.6
37	Aubergenville	12,723	1,404	9.1
38	Triel-sur-Seine	12,206	883	13.8
39	Villepreux	11,931	1,141	10.5
40	Croissy-sur-Seine	11,013	3,201	3.4
41	Chanteloup-les-Vignes	10,861	3,172	3.4
42	Voisins-le-Bretonneux	10,624	2,944	3.6

All rankings →

The rankings of Yvelines

Where Yvelines stands out

Its region : Île-de-France

The other departments of Île-de-France

Every territory (118)

All 13 regions

All 105 departments →

Scope, method and sources

Scope: France, metropolitan and overseas, Corsica and the DROM included. This dataset holds every commune of 10,000 inhabitants or more, plus smaller communes famous enough to be household names, 1,131 in all. It is not the full list of 35,000 French communes, so a village can sit outside a ranking whose extreme it would otherwise hold.

Method and sources: populations are the INSEE legal populations, boundaries and coordinates come from the IGN commune registry, both served by geo.api.gouv.fr. Density is the population divided by the commune's area; distances are measured as the crow flies from the commune's centre. Data read on August 28, 2026.

5 questions about this territory

What is the largest city of Yvelines?: Versailles, with 84,095 inhabitants, ahead of Sartrouville (52,763).
How many cities does Yvelines have?: 42 of its communes are listed here: every one over 10,000 inhabitants, plus the smaller ones that are household names. Yvelines has far more communes than that.
Which city of Yvelines is the densest?: Houilles, at 7,593 inhab./km², against 2,458 inhab./km² for the cities of Yvelines taken together.
Which region is Yvelines in?: Île-de-France, which this dataset carries 266 cities of.
Which cities are in Yvelines?: Versailles (84,095), Sartrouville (52,763), Saint-Germain-en-Laye (45,931), Mantes-la-Jolie (43,526), Poissy (40,983), Conflans-Sainte-Honorine (36,958), Trappes (34,689), Les Mureaux (34,632), Houilles (33,983), Montigny-le-Bretonneux (32,465). The full table is on this page, with the figures for each.