| Locality | Post Code |
|---|---|
| Maraco Chico, Utracán | L8200 XAV |
| Médano Colorado, Utracán | L8200 XAW |
| Quehué, Utracán | L8203 |
| San Antonio, Utracán | L8203 XAD |
| San Ernesto, Utracán | L8203 XAE |
| San Simon, Utracán | L8200 XBK |
| Santa Clara, Utracán | L8214 XAL |
| Santa Elena, Utracán | L8201 XBG |
| Santa María, Utracán | L8214 XAM |
| Santo Domingo, Utracán | L8203 XAF |
| Unanué, Utracán | L8215 |
| Utracán, Utracán | L8203 XAA |
| Valle Argentino, Utracán | L8200 XBI |
| Valle Daza, Utracán | L8200 XBJ |
| La Pampa Postal Codes | |
|---|---|
| Utracán | Trenel |
| Toay | Realicó |
| Rancul | Quemú Quemú |
| Puelén | Maracó |
| Loventué | Limay Mahuida |
| Lihuel Calel | Hucal |
| Guatraché | Curacó |
| Conhelo | Chical Co |
| Chapaleufú | Chalileo |
| Catriló | Capital |
| Caleu Caleu | Atreucó |