Kustavi

Municipality in Southwest Finland, FinlandKustavi GustavsMunicipalityKustavin kuntaGustavs kommunThe Isokari Lighthouse in Kustavi Coat of armsLocation of Kustavi in FinlandInteractive map of KustaviCoordinates: 60°32.8′N 021°21.5′E / 60.5467°N 21.3583°E / 60.5467; 21.3583Country FinlandRegionSouthwest FinlandSub-regionVakka-SuomiCharter1874Named forGustav IIIGovernment • Municipal managerVeijo KataraArea (2018-01-01) • Total770.15 km2 (297.36 sq mi) • Land165.84 km2 (64.03 sq mi) • Water603.45 km2 (232.99 sq mi) • Rank273rd largest in FinlandPopulation (2025-12-31) • Total972 • Rank296th largest in Finland • Density5.86/km2 (15.2/sq mi)Population by native language • Finnish93.2% (official) • Swedish2% • Others4.8%Population by age • 0 to 149% • 15 to 6451.8% • 65 or older39.2%Time zoneUTC+02:00 (EET) • Summer (DST)UTC+03:00 (EEST)Websitekustavi.fi/en/ Kustavi (Finnish pronunciation: [ˈkustɑʋi]; Swedish: Gustavs) is a municipality of Finland. It is in the province of Western Finland and is part of the Southwest Finland region. The municipality has a population of 972 (31 December 2025), which makes it the smallest municipality in southwest Finland in terms of population. It covers an area of 770.15 square kilometres (297.36 sq mi) of which 603.45 km2 (232.99 sq mi) is water. The population density is 5.86 per square kilometre (15.2/sq mi). There are over 2,000 isles within the municipal area. The municipality is a very popular summer resort and contains over 2,800 summer cottages. The population increases tenfold during the summer months. The larger events are Volter Kilpi literature week in July and Salmon market (Lohimarkkinat) in August. The basic services in the municipality include three groceries, a liquor store, a library and a bank. There are two ferry connections to Brändö and Iniö. The municipality is unilingually Finnish even though it is located adjacent to the Swedish speaking Åland-region. The municipality is named after King Gustav III of Sweden.