| Statutory cities |
|---|
| Wels, Wels |
| All postal codes in Oberösterreich |
|---|
| Braunau am Inn |
| Eferding |
| Freistadt |
| Gmunden |
| Grieskirchen |
| Kirchdorf an der Krems |
| Linz |
| Linz-Land |
| Perg |
| Ried im Innkreis |
| Rohrbach |
| Schärding |
| Steyr |
| Steyr-Land |
| Urfahr-Umgebung |
| Vöcklabruck |
| Wels |
| Wels-Land |