In Ille-et-Vilaine · INSEE, populations légales
Rennes is the most densely populated city in Ille-et-Vilaine, at 4,587 inhab./km², ahead of Fougères (1,948 inhab./km²) and Dinard (1,414 inhab./km²). At the other end, Pacé is the least densely populated city, at 335 inhab./km².
| Rank | City | Density | Population |
|---|---|---|---|
| 1 | Rennes | 4,587 inhab./km² | 230,890 |
| 2 | Fougères | 1,948 inhab./km² | 20,307 |
| 3 | Dinard | 1,414 inhab./km² | 10,772 |
| 4 | Saint-Malo | 1,303 inhab./km² | 47,439 |
| 5 | Saint-Jacques-de-la-Lande | 1,118 inhab./km² | 13,800 |
| 6 | Chantepie | 892 inhab./km² | 10,670 |
| 7 | Bruz | 657 inhab./km² | 19,683 |
| 8 | Cesson-Sévigné | 584 inhab./km² | 18,761 |
| 9 | Vitré | 501 inhab./km² | 19,365 |
| 10 | Betton | 484 inhab./km² | 12,964 |
| 11 | Châteaugiron | 457 inhab./km² | 10,845 |
| 12 | Cancale | 451 inhab./km² | 5,672 |
| 13 | Pacé | 335 inhab./km² | 11,703 |
The same ranking for the whole of France : The densest cities in France · The least densely populated cities in France
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.