List of communes of the Province of Caltanissetta
The following is a list of the 22 comuni of the Province of Caltanissetta, Sicily, in Italy.
| ISTAT Code | Comune | Population | Area | Elevation | Location | Fiscal code | Area code | Demonym | Official website |
| 085001 | Acquaviva Platani | 1,045 | 14.7 | 558 | A049 | 0934 | Acquavivesi | ||
| 085002 | Bompensiere | 632 | 19.7 | 283 | A957 | 0934 | Bompensierini, Nadurisi | ||
| 085003 | Butera | 5,004 | 297.1 | 402 | B302 | 0934 | Buteresi | ||
| 085004 | Caltanissetta | 60,267 | 417.2 | 568 | B429 | 0934 | Nisseni | ||
| 085005 | Campofranco | 3,308 | 36.1 | 350 | B537 | 0934 | Campofranchesi | ||
| 085006 | Delia | 4,551 | 12.3 | 420 | D267 | 0922 | Deliani | ||
| 085007 | Gela | 77,209 | 277.3 | 46 | D960 | 0933 | Galati, Gelidi, Gelesi | ||
| 085008 | Marianopoli | 2,075 | 13.0 | 720 | E953 | 0934 | Marianopolitani, Manchesi | ||
| 085009 | Mazzarino | 12,007 | 294.0 | 553 | F065 | 0934 | Mazzarinesi | ||
| 085010 | Milena | 3,223 | 24.6 | 436 | E618 | 0934 | Milenesi | ||
| 085011 | Montedoro | 1,683 | 14.1 | 450 | F489 | 0934 | Montedoresi | ||
| 085012 | Mussomeli | 11,219 | 163.9 | 726 | F830 | 0934 | Mussomelesi | ||
| 085013 | Niscemi | 26,402 | 96.5 | 332 | F899 | 0933 | Niscemesi | ||
| 085014 | Resuttano | 2,206 | 38.2 | 600 | H245 | 0934 | Resuttanesi | ||
| 085015 | Riesi | 11,294 | 66.7 | 330 | H281 | 0934 | Riesini | ||
| 085016 | San Cataldo | 23,359 | 75.1 | 625 | H792 | 0934 | Sancataldesi | ||
| 085017 | Santa Caterina Villarmosa | 5,738 | 75.6 | 606 | I169 | 0934 | Caterinesi | ||
| 085018 | Serradifalco | 6,428 | 41.6 | 504 | I644 | 0934 | Serradifalchesi | ||
| 085019 | Sommatino | 7,420 | 34.7 | 359 | I824 | 0922 | Sommatinesi | ||
| 085020 | Sutera | 1,502 | 35.5 | 590 | L016 | 0934 | Suteresi | ||
| 085021 | Vallelunga Pratameno | 3,725 | 39.2 | 472 | L609 | 0934 | Vallelunghesi | ||
| 085022 | Villalba | 1,755 | 41.5 | 620 | L959 | 0934 | Villalbesi | ||
| Total | 272,052 | 2,128.5 |