| Code | Name | Region |
|---|---|---|
| ATHZF | Hotzelsdorf | 3 |
| ATHUT | Huttau | 5 |
| ATILL | Illmitz | |
| ATILZ | Ilz | 6 |
| ATIMS | Imst | 7 |
| ATIZG | Innermanzing | 3 |
| ATINN | Innsbruck | 7 |
| ATZIN | Inzersdorf An Der Traisen | 3 |
| ATIIK | Inzersdorf Im Kremstal | 4 |
| ATHBH | Hobenbach | 3 |
| ATBNN | Hobersbrunn | 3 |
| ATHOC | Hochfilzen | 7 |
| ATHST | Hochst | 8 |
| ATBE8 | Hof Bei Salzburg | 5 |
| ATHFN | Hofen | 7 |
| ATHDT | Hofkirchen An Der Trattnach | 4 |
| ATHOM | Hofkirchen Im Muhlkreis | 4 |
| ATHNT | Hofkirchen Im Traunkreis | 4 |
| ATEIN | Hoflein | 3 |
| ATHDR | Hofstatten An Der Raab | 6 |
| ATHAU | Hohenau An Der March | |
| ATHBR | Hohenberg | 3 |
| ATHIH | Hoheneich | 3 |
| ATHOH | Hohenems | 8 |
| ATHON | Hohenruppersdorf | |
| ATH3H | Hohenwarth | 3 |
| ATOHO | Hohenzell | 4 |
| ATHOL | Hollabrunn | |
| ATLLG | Hollenburg | |
| ATHZL | Heiligenkreuz Im Lafnitztal | 1 |
| ATHFS | Heinfels | 7 |
| ATHEL | Helfenberg | 4 |
| ATHEO | Henndorf Am Wallersee | |
| ATHNN | Hennersdorf | 3 |
| ATHMG | Hermagor | |
| ATHER | Herzogenburg | |
| ATHED | Herzogsdorf | 4 |
| ATHMD | Hetzmannsdorf | 3 |
| ATHFL | Hieflau | 6 |
| ATHIM | Hilm | 3 |
| ATABG | Himberg | |
| ATHBL | Hinterbruhl | 3 |
| ATHRM | Hirm | 1 |
| ATSH5 | Hirnsdorf | 6 |
| ATHHG | Hirschegg | 8 |
| ATHIR | Hirschegg Rein | 6 |
| ATHIG | Hirschwang | 3 |
| ATHTE | Hirtenberg | |
| ATHTZ | Hitzendorf | 6 |
| ATHSN | Hansenhutte |