There are 25 municipalities within the province of Trapani in Sicily. Alcamo is the largest city by population with a total of 44.599 inhabitants.
| Name | Population | Density | Altitude |
|---|---|---|---|
| Alcamo | 44.599 | 341pp/km² | 258m |
| Buseto palizzolo | 2.802 | 38pp/km² | 249m |
| Calatafimi-segesta | 6.196 | 40pp/km² | 338m |
| Campobello di mazara | 11.413 | 173pp/km² | 110m |
| Castellammare del golfo | 14.474 | 114pp/km² | 26m |
| Castelvetrano | 29.398 | 140pp/km² | 187m |
| Custonaci | 5.258 | 75pp/km² | 186m |
| Erice | 26.342 | 556pp/km² | 751m |
| Favignana | 4.448 | 116pp/km² | 6m |
| Gibellina | 3.767 | 81pp/km² | 233m |
| Marsala | 80.071 | 329pp/km² | 12m |
| Mazara del vallo | 50.129 | 182pp/km² | 8m |
| Misiliscemi(*) | 8.669 | 93pp/km² | 3m |
| Paceco | 10.824 | 187pp/km² | 36m |
| Pantelleria | 7.335 | 87pp/km² | 5m |
| Partanna | 9.892 | 120pp/km² | 414m |
| Petrosino | 7.924 | 175pp/km² | 13m |
| Poggioreale | 1.349 | 36pp/km² | 189m |
| Salaparuta | 1.584 | 38pp/km² | 171m |
| Salemi | 9.989 | 55pp/km² | 446m |
| San vito lo capo | 4.801 | 80pp/km² | 6m |
| Santa ninfa | 4.829 | 79pp/km² | 410m |
| Trapani | 64.486 | 236pp/km² | 3m |
| Valderice | 11.524 | 218pp/km² | 240m |
| Vita | 1.799 | 198pp/km² | 480m |
