| Name | Country | Feature class | Latitude | Longitude | |
|---|---|---|---|---|---|
3201  | Ahokylä Aho,Ahokyla,Ahokylä | Finland, North Ostrobothnia Haapavesi-Siikalatva > Pyhäntä | populated place | N 63° 59′ 32'' | E 26° 33′ 1'' |
| 3202 | Ahmoo Ahmo,Ahmoo,Ahmoonkyla,Ahmoonkylä | Finland, Uusimaa Helsinki sub-region > Karkkila | populated place | N 60° 31′ 33'' | E 24° 15′ 56'' |
| 3203 | Agnisbäck Agnisbaeck,Agnisbäck,Gamla Kvarnen | Finland, Ostrobothnia Vaasa > Vörå | populated place | N 63° 9′ 14'' | E 22° 31′ 49'' |
| 3204 | Aavasaksa Aavasaksa,Аавасакса | Finland, Lapland Torniolaakso > Ylitornio | populated place | N 66° 22′ 46'' | E 23° 42′ 9'' |
| 3205 | Storby Isokylae,Isokylä,Storby | Finland, Central Ostrobothnia Kokkola > Kokkola | populated place | N 63° 48′ 48'' | E 23° 7′ 34'' |
| 3206 | Steninge Steininge,Steninge | Finland, Southwest Finland Turku > Sauvo | populated place | N 60° 18′ 14'' | E 22° 31′ 41'' |
| 3207 | Stenbacka Stenback,Stenbacka | Finland, Ostrobothnia Jakobstadsregionen > Pedersöre | populated place | N 63° 30′ 0'' | E 22° 51′ 0'' |
| 3208 | Stenbäck Stenback,Stenbacka,Stenbäck | Finland, Ostrobothnia Jakobstadsregionen > Nykarleby | populated place | N 63° 22′ 0'' | E 22° 29′ 0'' |
| 3209 | Ståbacka Stabacka,Stalbacka,Ståbacka,Stålbacka | Finland, Ostrobothnia Sydösterbotten > Närpes | populated place | N 62° 24′ 24'' | E 21° 21′ 14'' |
| 3210 | Sotkuma Sotkuma,Соткума | Finland, North Karelia Joensuu > Polvijärvi | populated place | N 62° 44′ 16'' | E 29° 26′ 20'' |
| 3211 | Sossonniemi Sosso,Sossonniemi | Finland, North Ostrobothnia Koillismaa > Kuusamo | populated place | N 65° 55′ 41'' | E 29° 32′ 35'' |
| 3212 | Sonkari Sonkari,Sonkarinsaari | Finland, North Savo Sisä-Savo > Vesanto | populated place | N 62° 50′ 59'' | E 26° 32′ 6'' |
| 3213 | Someronperä Somero,Someronpera,Someronperä | Finland, North Ostrobothnia Ylivieska > Ylivieska | populated place | N 64° 4′ 40'' | E 24° 26′ 10'' |
| 3214 | Solkei Solkei,Solkeinkyla,Solkeinkylä | Finland, South Karelia Lappeenranta > Taipalsaari | populated place | N 61° 14′ 48'' | E 27° 51′ 28'' |
| 3215 | Soinila Soinila,Soinita | Finland, North Karelia Joensuu > Polvijärvi | populated place | N 62° 52′ 0'' | E 29° 4′ 0'' |
| 3216 | Soidinmäki Soidinmaki,Soidinmäki,Soijinmaki,Soijinmäki | Finland, Central Finland Saarijärvi-Viitasaari > Saarijärvi | populated place | N 62° 38′ 52'' | E 24° 56′ 27'' |
| 3217 | Soidinkangas Soidinkangas,Soidinsuo | Finland, North Karelia Pielisen Karjala > Valtimo | populated place | N 63° 49′ 0'' | E 28° 36′ 0'' |
| 3218 | Södra Vallgrund Sodra Vallgrund,Södra Vallgrund,Vallgrundsoderby,Vallgrundsöderby | Finland, Ostrobothnia Vaasa > Korsholm | populated place | N 63° 10′ 51'' | E 21° 16′ 51'' |
| 3219 | Ali-Vekkoski Ali-Vekkoski,Soderveckoski,Söderveckoski | Finland, Uusimaa Porvoo > Porvoo | populated place | N 60° 22′ 15'' | E 25° 26′ 8'' |
| 3220 | Söderudden Soderudden,Soderuddland,Söderudden,Söderuddland | Finland, Ostrobothnia Vaasa > Korsholm | populated place | N 63° 17′ 0'' | E 21° 7′ 24'' |
| 3221 | Köklot Koklot,Köklot,Soderskat,Söderskat | Finland, Ostrobothnia Vaasa > Korsholm | populated place | N 63° 16′ 46'' | E 21° 40′ 18'' |
| 3222 | Söderby Soderby,Storpellinge,Söderby | Finland, Uusimaa Porvoo > Porvoo | populated place | N 60° 12′ 55'' | E 25° 50′ 49'' |
| 3223 | Soklot Socklot,Soklot | Finland, Ostrobothnia Jakobstadsregionen > Nykarleby | populated place | N 63° 34′ 13'' | E 22° 33′ 19'' |
| 3224 | Smedaböle Smedabole,Smedaböle | Finland, Southwest Finland Åboland-Turunmaa > Kimitoön | populated place | N 60° 12′ 9'' | E 22° 50′ 18'' |
| 3225 | Skinnarvik Skinnarvik | Finland, Southwest Finland Åboland-Turunmaa > Kimitoön | populated place | N 60° 8′ 0'' | E 22° 28′ 0'' |
| 3226 | Sjökulla Jarvikunnas,Järvikunnas,Sjokulla,Sjökulla | Finland, Uusimaa Loviisa > Lappträsk | populated place | N 60° 38′ 0'' | E 26° 9′ 0'' |
| 3227 | Sjögård Sjogara,Sjogard,Sjögård,Sjögårå | Finland, Uusimaa Loviisa > Loviisa | populated place | N 60° 25′ 0'' | E 26° 1′ 0'' |
| 3228 | Sivatti Sigvartsby,Sivatti | Finland, Kymenlaakso Kotka-Hamina > Hamina | populated place | N 60° 35′ 17'' | E 27° 13′ 18'' |
| 3229 | Siuro  Siuro,Сіуро | Finland, Pirkanmaa Tampere > Nokia | populated place | N 61° 28′ 39'' | E 23° 21′ 12'' |
| 3230 | Sirnäs Sirnas,Sirnasby,Sirnäs,Sirnäsby | Finland, Southwest Finland Åboland-Turunmaa > Kimitoön | populated place | N 60° 1′ 57'' | E 22° 35′ 59'' |
| 3231 | Sipari Sipari,Siparinmaki,Siparinmäki | Finland, South Karelia Imatra > Rautjärvi | populated place | N 61° 26′ 0'' | E 29° 10′ 0'' |
| 3232 | Sintsi Sintsi,Sintsila,Sintsilä | Finland, North Karelia Keski-Karjala > Rääkkylä | populated place | N 62° 21′ 21'' | E 29° 54′ 43'' |
| 3233 | Siniluodonperä Siniluodonpera,Siniluodonperä,Siniluoto | Finland, North Ostrobothnia Raahe > Raahe | populated place | N 64° 37′ 0'' | E 24° 23′ 39'' |
| 3234 | Siniävirta Sinianvirta,Siniavirta,Siniänvirta,Siniävirta | Finland, Central Finland Jämsä > Jämsä | populated place | N 62° 6′ 0'' | E 25° 6′ 0'' |
| 3235 | Simpele Simpele,Симпеле | Finland, South Karelia Imatra > Rautjärvi | seat of a third-order administrative division | N 61° 26′ 0'' | E 29° 22′ 0'' |
| 3236 | Simoskylä Simonen,Simoskyla,Simoskylä | Finland, Pirkanmaa Ylä-Pirkanmaa > Virrat | populated place | N 62° 14′ 4'' | E 23° 55′ 55'' |
| 3237 | Simonkylä Simonkjulja,Simonkylae,Simonkylä,Симонкюля | Finland, Lapland Kemi-Tornio > Simo | populated place | N 65° 38′ 22'' | E 25° 0′ 50'' |
| 3238 | Simonby Simonby,Sitonby | Finland, Southwest Finland Åboland-Turunmaa > Pargas | populated place | N 60° 16′ 54'' | E 22° 13′ 6'' |
| 3239 | Simola | Finland, South Karelia Lappeenranta > Savitaipale | populated place | N 60° 54′ 18'' | E 28° 9′ 0'' |
| 3240 | Simananniemi Simananniemi,Simonanniemi | Finland, North Karelia Joensuu > Liperi | populated place | N 62° 30′ 0'' | E 29° 23′ 0'' |
| 3241 | Broby Broby,Siltakyla,Siltakylä,Stor Kuppis | Finland, Kymenlaakso Kotka-Hamina > Pyttis | seat of a third-order administrative division | N 60° 30′ 0'' | E 26° 43′ 0'' |
| 3242 | Siksalo Siksala,Siksalo | Finland, Southwest Finland Salo > Salo | populated place | N 60° 2′ 0'' | E 22° 52′ 0'' |
| 3243 | Sikakylä Kellosaari,Sikakyla,Sikakylä | Finland, South Ostrobothnia Seinäjoki > Kurikka | populated place | N 62° 31′ 0'' | E 22° 48′ 38'' |
| 3244 | Siitama Siitama,Sitama,Ситама | Finland, Pirkanmaa Tampere > Orivesi | populated place | N 61° 36′ 47'' | E 24° 12′ 43'' |
| 3245 | Siiskola Siiskola,Siskola | Finland, South Savo Mikkeli > Mikkeli | populated place | N 61° 34′ 30'' | E 27° 30′ 11'' |
| 3246 | Siippoo Siippo,Siippoo | Finland, Uusimaa Helsinki sub-region > Vihti | populated place | N 60° 25′ 32'' | E 24° 27′ 52'' |
| 3247 | Siikakämä Lupaniemi,Siikakama,Siikakämä | Finland, Lapland Rovaniemi > Rovaniemi | populated place | N 66° 13′ 55'' | E 26° 27′ 44'' |
| 3248 | Siggnäs Siggnas,Siggnäs,Signas,Signäs | Finland, Southwest Finland Åboland-Turunmaa > Pargas | populated place | N 60° 17′ 51'' | E 22° 26′ 14'' |
| 3249 | Keräs-Sieppi Keras-Sieppi,Keräs-Sieppi,Sieppi | Finland, Lapland Tunturi-Lappi > Muonio | populated place | N 68° 7′ 17'' | E 23° 51′ 10'' |
| 3250 | Seppäsentalo Seppasentalo,Seppasentato,Seppäsentalo,Seppäsentato | Finland, North Ostrobothnia Koillismaa > Taivalkoski | populated place | N 65° 30′ 0'' | E 28° 28′ 0'' |
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