| Code | Name | Region |
|---|---|---|
| FITKK | Tikkakoski | 8 |
| FITKR | Tikkurila (dickursby) | 18 |
| FITOH | Tohmajarvi | 13 |
| FITLP | Toholampi | 7 |
| FITJA | Toijala | 11 |
| FITVK | Toivakka | 13 |
| FITOI | Toivala | 13 |
| FITOJ | Tojby | 12 |
| FITOK | Tolkis (tolkkinen) | 18 |
| FITOL | Tolosenmaki | 13 |
| FITOR | Tornea (tornio) | 10 |
| FIKP7 | Sykarainen | 7 |
| FISYS | Sysma | 17 |
| FITAA | Taavetti | |
| FITHK | Tahkoluoto | |
| FITPS | Taipalsaari | 17 |
| FITAK | Taivalkoski | 14 |
| FITVS | Taivassalo (tovsala) | 19 |
| FITMM | Tammela | 17 |
| FITMP | Tammerfors (tampere) | 17 |
| FITVO | Tarvasjoki | 19 |
| FITER | Teerijarvi (terjarv) | 12 |
| FITEI | Teijo | 19 |
| FITNL | Tenala | 18 |
| FITTL | Terttila | 19 |
| FITRJ | Tervajoki | 12 |
| FISNA | Snappertuna | 18 |
| FISOT | Sodankyla | 10 |
| FISKA | Soderkulla | 18 |
| FISOI | Soini | 3 |
| FISRO | Somero | 19 |
| FISON | Sonkajarvi | 13 |
| FISOO | Soormarkku | 17 |
| FISSK | Sorsakoski | 13 |
| FISMO | Sotkamo | 14 |
| FISTR | Stromma | 19 |
| FISVK | Sulkava | 18 |
| FISMA | Summa | 9 |
| FISUL | Sunila | 9 |
| FISLI | Suolahti | 8 |
| FISBG | Suomenlinna (sveaborg) | 18 |
| FISLU | Suomussalmi | 5 |
| FISUJ | Suonenjoki | 15 |
| FISUI | Susikas | 6 |
| FISIP | Sibbo (sipoo) | 18 |
| FIYSE | Sievi | 14 |
| FISIK | Siikainen | 19 |
| FISKJ | Siikajoki | 15 |
| FISKT | Siikalatva | 15 |
| FISII | Siilinjarvi | 15 |