Press kit · department 78

Yvelines.

Every town in the department ranked on each criterion, ready to be reused. Each town is compared with French towns of the same size tier — a market town is never measured against a major city. Free to reuse, including commercially, on the sole condition that you credit La Grande Carte with a link to this page.

8 rankings 71 towns ranked Public data · Licence Ouverte (Etalab)

Cite this page

La Grande Carte, “Press kit — Yvelines (78)”, https://lagrandecarte.fr/en/presse/yvelines-78 (accessed 28 September 2026).

<a href="https://lagrandecarte.fr/en/presse/yvelines-78">Yvelines press kit — La Grande Carte</a>

01.

Safest cities.

Low crime, rare assaults, few burglaries, downward trend — data from the French Ministry of Interior

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Chatou	Mid-size cities	30,054	1 / 22	4 / 470
Chesnay	Mid-size cities	31,064	2 / 22	7 / 470
Maisons-Laffitte	Mid-size cities	22,855	3 / 22	8 / 470
Montigny-le-Bretonneux	Mid-size cities	32,150	4 / 22	11 / 470
Jouars-Pontchartrain	Small cities	5,965	1 / 49	87 / 1747
Vaux-sur-Seine	Small cities	5,143	2 / 49	90 / 1747
Chevreuse	Small cities	5,531	3 / 49	91 / 1747
Carrières-sur-Seine	Small cities	15,002	4 / 49	96 / 1747
Sartrouville	Mid-size cities	51,570	5 / 22	28 / 470
Mantes-la-Ville	Mid-size cities	21,874	6 / 22	42 / 470

Lowest-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Chambourcy	Small cities	5,826	49 / 49	1584 / 1747
Bonnières-sur-Seine	Small cities	5,077	48 / 49	1416 / 1747
Triel-sur-Seine	Small cities	12,386	47 / 49	1365 / 1747
Saint-Rémy-lès-Chevreuse	Small cities	7,747	46 / 49	1299 / 1747
Épône	Small cities	6,778	45 / 49	1282 / 1747

Both tables are sorted by national rank within the size tier, the only measure that is comparable between a small town and a large city. The department rank is read within the same tier: a town that is the only one of its size in the department is therefore automatically ranked 1 of 1.

Full national ranking: Safest cities.

02.

Best environmental quality.

Compliant drinking water, far from nuclear plants, low radon, low seismic risk, balanced soils, no major hazard

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Trappes	Mid-size cities	34,276	1 / 22	31 / 470
Rambouillet	Mid-size cities	27,145	2 / 22	42 / 470
Montigny-le-Bretonneux	Mid-size cities	32,150	3 / 22	48 / 470
Maurepas	Small cities	19,960	1 / 49	191 / 1747
Guyancourt	Mid-size cities	29,758	4 / 22	54 / 470
Saint-Cyr-l'École	Mid-size cities	20,451	5 / 22	73 / 470
Saint-Arnoult-en-Yvelines	Small cities	5,854	2 / 49	283 / 1747
Essarts-le-Roi	Small cities	6,772	3 / 49	303 / 1747
Plaisir	Mid-size cities	31,971	6 / 22	88 / 470
Perray-en-Yvelines	Small cities	6,515	4 / 49	328 / 1747

Lowest-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Saint-Rémy-lès-Chevreuse	Small cities	7,747	49 / 49	1581 / 1747
Rosny-sur-Seine	Small cities	7,041	48 / 49	1560 / 1747
Mantes-la-Jolie	Mid-size cities	44,246	22 / 22	405 / 470
Vaux-sur-Seine	Small cities	5,143	47 / 49	1489 / 1747
Chanteloup-les-Vignes	Small cities	10,793	46 / 49	1447 / 1747

Full national ranking: Best environmental quality.

03.

Best cities for health.

Access to GPs (APL), hospitals and specialists, drinking water quality, radon and nuclear exposure

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Port-Marly	Small cities	5,583	1 / 49	166 / 1747
Chesnay	Mid-size cities	31,064	1 / 22	56 / 470
Bois-d'Arcy	Small cities	16,225	2 / 49	222 / 1747
Trappes	Mid-size cities	34,276	2 / 22	81 / 470
Rambouillet	Mid-size cities	27,145	3 / 22	111 / 470
Aubergenville	Small cities	12,540	3 / 49	414 / 1747
Villennes-sur-Seine	Small cities	5,792	4 / 49	578 / 1747
Viroflay	Small cities	16,943	5 / 49	594 / 1747
Jouars-Pontchartrain	Small cities	5,965	6 / 49	655 / 1747
Vésinet	Small cities	15,712	7 / 49	696 / 1747

Lowest-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Magny-les-Hameaux	Small cities	9,353	49 / 49	1689 / 1747
Rosny-sur-Seine	Small cities	7,041	48 / 49	1666 / 1747
Achères	Mid-size cities	21,663	22 / 22	447 / 470
Vaux-sur-Seine	Small cities	5,143	47 / 49	1656 / 1747
Montesson	Small cities	14,606	46 / 49	1585 / 1747

Full national ranking: Best cities for health.

04.

Best cities for families.

Schools and nurseries, safety, doctors, sport and culture, shops, fibre internet — everything to raise kids well

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Buc	Small cities	5,868	1 / 49	112 / 1747
Montigny-le-Bretonneux	Mid-size cities	32,150	1 / 22	71 / 470
Rambouillet	Mid-size cities	27,145	2 / 22	106 / 470
Saint-Germain-en-Laye	Mid-size cities	45,286	3 / 22	141 / 470
Guyancourt	Mid-size cities	29,758	4 / 22	161 / 470
Versailles	Mid-size cities	83,918	5 / 22	170 / 470
Jouars-Pontchartrain	Small cities	5,965	2 / 49	713 / 1747
Gargenville	Small cities	7,848	3 / 49	742 / 1747
Magnanville	Small cities	6,389	4 / 49	770 / 1747
Voisins-le-Bretonneux	Small cities	10,740	5 / 49	860 / 1747

Full national ranking: Best cities for families.

05.

Most dynamic cities.

Growing population, rising incomes, falling unemployment, strong municipal investment, recent housing

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Saint-Cyr-l'École	Mid-size cities	20,451	1 / 22	39 / 470
Chanteloup-les-Vignes	Small cities	10,793	1 / 49	278 / 1747
Trappes	Mid-size cities	34,276	2 / 22	76 / 470
Buc	Small cities	5,868	2 / 49	337 / 1747
Vélizy-Villacoublay	Mid-size cities	22,481	3 / 22	106 / 470
Carrières-sous-Poissy	Small cities	19,951	3 / 49	400 / 1747
Orgeval	Small cities	7,092	4 / 49	427 / 1747
Mureaux	Mid-size cities	34,151	4 / 22	143 / 470
Bois-d'Arcy	Small cities	16,225	5 / 49	550 / 1747
Rosny-sur-Seine	Small cities	7,041	6 / 49	581 / 1747

Full national ranking: Most dynamic cities.

06.

Best quality of life.

Overall synthesis: amenities, safety, doctors, incomes, fibre, nearby nature, healthy water, low unemployment

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Rambouillet	Mid-size cities	27,145	1 / 22	164 / 470
Montigny-le-Bretonneux	Mid-size cities	32,150	2 / 22	171 / 470
Saint-Germain-en-Laye	Mid-size cities	45,286	3 / 22	179 / 470
Perray-en-Yvelines	Small cities	6,515	1 / 49	781 / 1747
Chesnay	Mid-size cities	31,064	4 / 22	215 / 470
Jouars-Pontchartrain	Small cities	5,965	2 / 49	804 / 1747
Chatou	Mid-size cities	30,054	5 / 22	224 / 470
Versailles	Mid-size cities	83,918	6 / 22	234 / 470
Maisons-Laffitte	Mid-size cities	22,855	7 / 22	247 / 470
Sartrouville	Mid-size cities	51,570	8 / 22	262 / 470

Lowest-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Chanteloup-les-Vignes	Small cities	10,793	49 / 49	1732 / 1747
Verrière	Small cities	6,142	48 / 49	1703 / 1747
Bonnières-sur-Seine	Small cities	5,077	47 / 49	1680 / 1747
Carrières-sous-Poissy	Small cities	19,951	46 / 49	1674 / 1747
Saint-Rémy-lès-Chevreuse	Small cities	7,747	45 / 49	1672 / 1747

Full national ranking: Best quality of life.

07.

Best-managed municipalities.

Positive operating balance, controlled debt, strong investment, reasonable property tax rate

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Croissy-sur-Seine	Small cities	10,580	1 / 49	5 / 1747
Vélizy-Villacoublay	Mid-size cities	22,481	1 / 22	2 / 470
Chevreuse	Small cities	5,531	2 / 49	8 / 1747
Port-Marly	Small cities	5,583	3 / 49	10 / 1747
Maisons-Laffitte	Mid-size cities	22,855	2 / 22	3 / 470
Saint-Cyr-l'École	Mid-size cities	20,451	3 / 22	12 / 470
Chesnay	Mid-size cities	31,064	4 / 22	19 / 470
Louveciennes	Small cities	7,744	4 / 49	72 / 1747
Verrière	Small cities	6,142	5 / 49	77 / 1747
Poissy	Mid-size cities	40,792	5 / 22	21 / 470

Lowest-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Andrésy	Small cities	13,663	49 / 49	1678 / 1747
Carrières-sous-Poissy	Small cities	19,951	48 / 49	1487 / 1747
Épône	Small cities	6,778	47 / 49	1468 / 1747
Limay	Small cities	17,584	46 / 49	1346 / 1747
Rosny-sur-Seine	Small cities	7,041	45 / 49	1339 / 1747

Full national ranking: Best-managed municipalities.

08.

Preserved nature & environment.

National parks, nature reserves, Natura 2000, regional parks, far from nuclear, no major risks — preserved France

Top-ranked in the department

Town	Size tier	Population	Rank in its tier · Department	Rank in its tier · France
Trappes	Mid-size cities	34,276	1 / 22	12 / 470
Montigny-le-Bretonneux	Mid-size cities	32,150	2 / 22	13 / 470
Rambouillet	Mid-size cities	27,145	3 / 22	25 / 470
Perray-en-Yvelines	Small cities	6,515	1 / 49	193 / 1747
Essarts-le-Roi	Small cities	6,772	2 / 49	250 / 1747
Guyancourt	Mid-size cities	29,758	4 / 22	75 / 470
Élancourt	Mid-size cities	26,348	5 / 22	79 / 470
Chevreuse	Small cities	5,531	3 / 49	315 / 1747
Magny-les-Hameaux	Small cities	9,353	4 / 49	406 / 1747
Mesnil-Saint-Denis	Small cities	7,103	5 / 49	409 / 1747

Full national ranking: Preserved nature & environment.

Method and limits

What these tables say — and what they don’t.

Scores are composite: each criterion carries a published weight, shown under each national ranking.
Towns are ranked within a population tier (5,000–20,000, 20,000–100,000, over 100,000 inhabitants). Towns under 5,000 inhabitants are not ranked.
A town missing the data for a criterion is left out of that ranking, never ranked last by default.
This is not a league table of lived quality of life: these figures reflect the public data available, with its blind spots and publication delays.
Crime figures are offences recorded by the police and the gendarmerie: they depend on whether victims report them and on how present the services are.

Sources, data years and weightings: About page. A question, a figure that looks wrong to you, a request for a custom breakdown — contact@lagrandecarte.fr.