Introduction
This article is about municipality called Marttila. For neighbourhood of Helsinki with the same name, see Marttila, Helsinki. For the surname, see Marttila (surname). Municipality in Southwest Finland, FinlandMarttila S:t MårtensMunicipalityMarttilan kuntaS:t Mårtens kommunA countryside of Marttila Coat of armsLocation of Marttila in FinlandInteractive map of MarttilaCoordinates: 60°35′N 022°54′E / 60.583°N 22.900°E / 60.583; 22.900Country FinlandRegionSouthwest FinlandSub-regionLoimaaCharter1409Named afterMartin of ToursGovernment • Municipal managerAnne AhtiainenArea (2018-01-01) • Total195.99 km2 (75.67 sq mi) • Land195.31 km2 (75.41 sq mi) • Water0.71 km2 (0.27 sq mi) • Rank264th largest in FinlandPopulation (2025-12-31) • Total1,890 • Rank261st largest in Finland • Density9.68/km2 (25.1/sq mi)Population by native language • Finnish95.8% (official) • Swedish1% • Others3.3%Population by age • 0 to 1415.9% • 15 to 6456.3% • 65 or older27.8%Time zoneUTC+02:00 (EET) • Summer (DST)UTC+03:00 (EEST)ClimateDfcWebsitewww.marttila.fi Marttila (Finnish: [ˈmɑrtːilɑ]; Swedish: S:t Mårtens, i.e. "Saint Martin's") is a municipality of Finland. It is located in the province of Western Finland and is part of the Southwest Finland region. The municipality has a population of 1,890 (31 December 2025) and covers an area of 195.99 square kilometres (75.67 sq mi) of which 0.71 km2 (0.27 sq mi) is water. The population density is 9.68 inhabitants per square kilometre (25.1/sq mi). The municipality is unilingually Finnish. Marttila's neighbouring municipalities are Koski Tl, Lieto, Loimaa, Paimio, Pöytyä and Salo.