| Localité | Code postal |
|---|---|
| Andino, Iriondo | S2215 |
| Berretta, Iriondo | S2501 XAC |
| Bustinza, Iriondo | S2504 |
| Campo Horquesco, Iriondo | S2144 XAB |
| Campo Medina, Iriondo | S2142 XAA |
| Campo Paletta, Iriondo | S2206 XAA |
| Campo Raffo, Iriondo | S2216 XAA |
| Cañada de Gomez, Iriondo | S2500 |
| Carrizales, Iriondo | S2218 XAA |
| Cicarelli, Iriondo | S2500 XAA |
| Clarke, Iriondo | S2218 |
| Clason, Iriondo | S2151 |
| Colonia Médici, Iriondo | S2144 XAA |
| Colonia Tres Marias, Iriondo | S2216 XAB |
| Correa, Iriondo | S2506 |
| Granja San Manuel, Iriondo | S2501 XAD |
| Kilometro 323, Iriondo | S2142 XAB |
| Kilometro 49, Iriondo | S2506 XAA |
| Larguía, Iriondo | S2144 XAC |
| Las Trojas, Iriondo | S2500 XAB |
| Los Leones, Iriondo | S2146 XAA |
| Lucio V. López, Iriondo | S2150 |
| Maria Luisa Correa, Iriondo | S2502 |
| Oliveros, Iriondo | S2206 |
| Rincon de Grondona, Iriondo | S2206 XAB |
| Salto Grande, Iriondo | S2142 |