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Largest city in the Ille-et-Vilaine department: the 2026 ranking

The 332 towns of the Ille-et-Vilaine department (35) ranked by population, area and density, based on the official INSEE population figures in force in 2026.

The largest city in the Ille-et-Vilaine department is Rennes, with 234,950 inhabitants (ranked 11th in France by population). The largest town by area is Paimpont (110 km²). Rennes is also the most densely populated town, with 4,663 inhabitants per km². At the other end of the ranking, Bléruais has only 101 inhabitants.

The Ille-et-Vilaine department has 1,145,286 inhabitants over 6,775 km², a density of 169 inhabitants per km², 1.5 times the national average (110 per km²). It accounts for 32.4% of the population of Brittany, the region it belongs to: see the ranking of the largest cities in Brittany.

The 20 largest cities in the Ille-et-Vilaine department by population

# Town Population km² per km² France rank
1 Rennes 234,950 50 4,663 11th
2 Saint-Malo 48,675 37 1,331 141st
3 Fougères 20,946 10 2,002 464th
4 Bruz 20,113 30 672 491st
5 Vitré 19,938 37 538 497th
6 Cesson-Sévigné 19,263 32 599 512th
7 Saint-Jacques-de-la-Lande 13,912 12 1,176 729th
8 Betton 13,273 27 497 765th
9 Pacé 12,021 35 344 844th
10 Dinard 11,285 7.8 1,439 911th
11 Châteaugiron 11,092 24 472 931st
12 Chantepie 10,824 12 904 959th
13 Saint-Grégoire 10,355 17 599 1,018th
14 Redon 10,342 15 685 1,021st
15 Le Rheu 10,068 19 533 1,052nd
16 Guichen 9,594 43 223 1,115th
17 Liffré 9,484 67 142 1,128th
18 Chartres-de-Bretagne 9,012 10.0 906 1,189th
19 Thorigné-Fouillard 8,905 14 656 1,202nd
20 Janzé 8,838 41 214 1,214th

Largest towns by area in the Ille-et-Vilaine department

# Town Population km² per km² France rank
1 Paimpont 1,812 110 16 187th
2 Guipry-Messac 7,524 92 82 288th
3 Val-Couesnon 4,161 79 53 420th
4 Val d'Anast 4,006 78 51 436th
5 Martigné-Ferchaud 2,738 74 37 474th
6 Iffendic 4,703 74 64 482nd
7 Liffré 9,484 67 142 609th
8 Bain-de-Bretagne 7,851 65 121 656th
9 Combourg 6,534 64 103 681st
10 Bazouges-la-Pérouse 1,906 58 33 821st

Most densely populated towns in the Ille-et-Vilaine department

# Town Population km² per km² France rank
1 Rennes 234,950 50 4,663 158th
2 Fougères 20,946 10 2,002 451st
3 Dinard 11,285 7.8 1,439 650th
4 Saint-Malo 48,675 37 1,331 706th
5 Châteauneuf-d'Ille-et-Vilaine 1,684 1.4 1,220 784th
6 Bécherel 693 0.6 1,216 788th
7 Saint-Jacques-de-la-Lande 13,912 12 1,176 814th
8 Chartres-de-Bretagne 9,012 10.0 906 1,048th
9 Chantepie 10,824 12 904 1,051st
10 La Richardais 2,731 3.1 870 1,099th

All towns in the Ille-et-Vilaine department (332)

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

Other departments in Brittany

Côtes-d'Armor (22) Finistère (29) Morbihan (56) 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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