List of the Postal codes of the 22 municipalies of province of Caltanissetta. Links on zip codes lists municipalities and other outlying areas (frazioni) with the same postcode.
| Municipality | ZIP |
|---|---|
| Acquaviva Platani | 93010 |
| Bompensiere | 93010 |
| Butera | 93011 |
| Caltanissetta | 93100 |
| Campofranco | 93010 |
| Delia | 93010 |
| Gela | 93012 |
| Marianopoli | 93010 |
| Mazzarino | 93013 |
| Milena | 93010 |
| Montedoro | 93010 |