The following is a list of the 77 municipalities ( comuni ) of the Province of Sondrio in the region of Lombardy in Italy.
| Municipality | Population (2025) [1] | Area (km²) [2] | Density |
|---|---|---|---|
| Albaredo per San Marco | 294 | 18.96 | 15.5 |
| Albosaggia | 2,985 | 34.35 | 86.9 |
| Andalo Valtellino | 602 | 6.78 | 88.8 |
| Aprica | 1,454 | 20.37 | 71.4 |
| Ardenno | 3,219 | 17.14 | 187.8 |
| Bema | 115 | 19.22 | 6.0 |
| Berbenno di Valtellina | 4,052 | 35.60 | 113.8 |
| Bianzone | 1,253 | 17.11 | 73.2 |
| Bormio | 3,904 | 41.44 | 94.2 |
| Buglio in Monte | 2,038 | 27.71 | 73.5 |
| Caiolo | 1,047 | 32.97 | 31.8 |
| Campodolcino | 931 | 48.49 | 19.2 |
| Caspoggio | 1,332 | 7.31 | 182.2 |
| Castello dell'Acqua | 602 | 14.07 | 42.8 |
| Castione Andevenno | 1,585 | 17.03 | 93.1 |
| Cedrasco | 420 | 14.42 | 29.1 |
| Cercino | 816 | 5.69 | 143.4 |
| Chiavenna | 7,236 | 10.77 | 671.9 |
| Chiesa in Valmalenco | 2,264 | 107.60 | 21.0 |
| Chiuro | 2,443 | 51.76 | 47.2 |
| Cino | 337 | 5.07 | 66.5 |
| Civo | 1,120 | 25.14 | 44.6 |
| Colorina | 1,341 | 17.84 | 75.2 |
| Cosio Valtellino | 5,559 | 23.99 | 231.7 |
| Dazio | 507 | 3.73 | 135.9 |
| Delebio | 3,322 | 22.44 | 148.0 |
| Dubino | 3,822 | 13.24 | 288.7 |
| Faedo Valtellino | 514 | 4.80 | 107.1 |
| Forcola | 756 | 15.90 | 47.5 |
| Fusine | 560 | 37.60 | 14.9 |
| Gerola Alta | 162 | 37.43 | 4.3 |
| Gordona | 1,972 | 62.79 | 31.4 |
| Grosio | 4,260 | 126.92 | 33.6 |
| Grosotto | 1,650 | 53.12 | 31.1 |
| Lanzada | 1,236 | 117.17 | 10.5 |
| Livigno | 6,726 | 227.30 | 29.6 |
| Lovero | 622 | 13.46 | 46.2 |
| Madesimo | 507 | 85.66 | 5.9 |
| Mantello | 750 | 3.78 | 198.4 |
| Mazzo di Valtellina | 1,017 | 15.32 | 66.4 |
| Mello | 953 | 11.43 | 83.4 |
| Mese | 1,867 | 4.15 | 449.9 |
| Montagna in Valtellina | 2,940 | 44.97 | 65.4 |
| Morbegno | 12,358 | 14.82 | 833.9 |
| Novate Mezzola | 1,893 | 99.75 | 19.0 |
| Pedesina | 37 | 6.30 | 5.9 |
| Piantedo | 1,426 | 6.80 | 209.7 |
| Piateda | 2,067 | 70.80 | 29.2 |
| Piuro | 1,911 | 84.25 | 22.7 |
| Poggiridenti | 1,806 | 2.90 | 622.8 |
| Ponte in Valtellina | 2,199 | 67.73 | 32.5 |
| Postalesio | 653 | 10.58 | 61.7 |
| Prata Camportaccio | 2,944 | 27.94 | 105.4 |
| Rasura | 285 | 6.00 | 47.5 |
| Rogolo | 573 | 12.83 | 44.7 |
| Samolaco | 2,903 | 45.80 | 63.4 |
| San Giacomo Filippo | 371 | 61.85 | 6.0 |
| Sernio | 494 | 9.52 | 51.9 |
| Sondalo | 3,876 | 95.45 | 40.6 |
| Sondrio | 21,331 | 20.88 | 1,021.6 |
| Spriana | 81 | 7.69 | 10.5 |
| Talamona | 4,586 | 21.05 | 217.9 |
| Tartano | 201 | 47.27 | 4.3 |
| Teglio | 4,648 | 115.32 | 40.3 |
| Tirano | 8,869 | 32.37 | 274.0 |
| Torre di Santa Maria | 723 | 44.24 | 16.3 |
| Tovo di Sant'Agata | 611 | 11.15 | 54.8 |
| Traona | 2,892 | 6.37 | 454.0 |
| Tresivio | 2,046 | 15.01 | 136.3 |
| Val Masino | 820 | 116.71 | 7.0 |
| Valdidentro | 4,163 | 226.73 | 18.4 |
| Valdisotto | 3,547 | 89.57 | 39.6 |
| Valfurva | 2,432 | 215.02 | 11.3 |
| Verceia | 1,080 | 11.38 | 94.9 |
| Vervio | 205 | 12.41 | 16.5 |
| Villa di Chiavenna | 971 | 32.52 | 29.9 |
| Villa di Tirano | 3,006 | 24.74 | 121.5 |