List of municipalities of Finland in which Finnish is not the sole official language
There are 53 municipalities of Finland in which Finnish is not the sole official language. In Finland, as of December 31, 2013, 89.3% of the population speak Finnish, 5.3% Swedish and 0.04% Sami languages. Both Finnish and Swedish are official languages of Finland. Officially, a municipality is bilingual if the minority language group consists of at least 8% of the population, or at least 3,000 speakers. A previously bilingual municipality remains so if the linguistic minority proportion drops below 8%, up to 6%. If it drops below 6%, it is possible for the municipality to remain bilingual by government decree, on the recommendation of the municipal council, for a further ten years. Municipalities that make use of the 3,000-speaker rule include the national capital Helsinki and the cultural center of Swedish Finns, Turku. On the Åland archipelago, where Finnish is almost absent from daily life, the language law does not apply. On the mainland, the highest proportion of Swedish-speakers is found on the western coast, in Ostrobothnia.
Of the 311 Finnish municipalities, 16 are monolingually Swedish. 33 municipalities are bilingually Finnish and Swedish; of these, 15 have a Swedish-speaking majority and 18 a Finnish-speaking one. Four municipalities, all located in Lapland, have a Finnish-speaking majority and a Sami-speaking minority: Enontekiö, Inari, Sodankylä and Utsjoki. Initially, only Swedish was accorded official bilingualism, through a language act of 1922; similar provisions were extended to Sami through a 1991 law. The 1922 law was replaced by new but largely similar legislation in 2003.
Municipalities
| Name in majority language | Name in minority language | Language | Percentage of population speaking official language other than Finnish 31 December 2013 | Region |
| — | Monolingually Swedish | 78.7 | ||
| — | Monolingually Swedish | 89.1 | ||
| Eanodat Enontekis | Finnish majority, Sami minority | 10.8 | Lapland | |
| Esbo | Finnish majority, Swedish minority | 7.8 | Uusimaa | |
| — | Monolingually Swedish | 91.7 | ||
| — | Monolingually Swedish | 85.7 | ||
| — | Monolingually Swedish | 87.2 | ||
| — | Monolingually Swedish | 92.5 | ||
| Hangö | Finnish majority, Swedish minority | 42.8 | Uusimaa | |
| Helsingfors | Finnish majority, Swedish minority | 5.9 | Uusimaa | |
| Aanaar Aanar Anár Enare | Finnish majority, Sami minority | 6.4 | Lapland | |
| Inkoo | Swedish majority, Finnish minority | 54.3 | Uusimaa | |
| Pietarsaari | Swedish majority, Finnish minority | 55.8 | Ostrobothnia | |
| — | Monolingually Swedish | 90.1 | ||
| Kaskö | Finnish majority, Swedish minority | 28.5 | Ostrobothnia | |
| Grankulla | Finnish majority, Swedish minority | 35.9 | Uusimaa | |
| Kemiönsaari | Swedish majority, Finnish minority | 70.3 | Southwest Finland | |
| Kyrkslätt | Finnish majority, Swedish minority | 17.6 | Uusimaa | |
| — | Monolingually Swedish | 88.4 | ||
| Karleby | Finnish majority, Swedish minority | 13.1 | Central Ostrobothnia | |
| Mustasaari | Swedish majority, Finnish minority | 69.0 | Ostrobothnia | |
| — | Swedish majority, Finnish minority | 87.2 | Ostrobothnia | |
| Kristiinankaupunki | Swedish majority, Finnish minority | 55.4 | Ostrobothnia | |
| Kruunupyy | Swedish majority, Finnish minority | 80.7 | Ostrobothnia | |
| — | Monolingually Swedish | 90.3 | ||
| Lappträsk | Finnish majority, Swedish minority | 32.8 | Uusimaa | |
| Luoto | Swedish majority, Finnish minority | 92.5 | Ostrobothnia | |
| — | Monolingually Swedish | 92.9 | ||
| Lojo | Finnish majority, Swedish minority | 3.5 | Uusimaa | |
| Lovisa | Finnish majority, Swedish minority | 42.0 | Uusimaa | |
| — | Monolingually Swedish | 91.0 | ||
| Maalahti | Swedish majority, Finnish minority | 86.1 | Ostrobothnia | |
| Maarianhamina | Monolingually Swedish | 85.7 | ||
| Mörskom | Finnish majority, Swedish minority | 9.8 | Uusimaa | |
| Närpiö | Swedish majority, Finnish minority | 84.8 | Ostrobothnia | |
| Uusikaarlepyy | Swedish majority, Finnish minority | 87.3 | Ostrobothnia | |
| Parainen | Swedish majority, Finnish minority | 56.4 | Southwest Finland | |
| Pedersören kunta | Swedish majority, Finnish minority | 89.7 | Ostrobothnia | |
| Borgå | Finnish majority, Swedish minority | 30.4 | Uusimaa | |
| Pyttis | Finnish majority, Swedish minority | 8.1 | Kymenlaakso | |
| Raasepori | Swedish majority, Finnish minority | 65.4 | Uusimaa | |
| — | Monolingually Swedish | 92.8 | ||
| Sibbo | Finnish majority, Swedish minority | 35.6 | Uusimaa | |
| Sjundeå | Finnish majority, Swedish minority | 29.6 | Uusimaa | |
| Soađegilli Suáđigil Suäʹđjel | Finnish majority, Sami minority | 1.6 | Lapland | |
| — | Monolingually Swedish | 91.0 | ||
| — | Monolingually Swedish | 92.3 | ||
| Åbo | Finnish majority, Swedish minority | 5.4 | Southwest Finland | |
| Ohcejohka Uccjuuhâ Uccjokk | Finnish majority, Sami minority | 46.0 | Lapland | |
| Vasa | Finnish majority, Swedish minority | 22.7 | Ostrobothnia | |
| Vanda | Finnish majority, Swedish minority | 2.7 | Uusimaa | |
| — | Monolingually Swedish | 90.1 | ||
| Vöyri | Swedish majority, Finnish minority | 82.6 | Ostrobothnia |