Sejny

Sejny
Monastery and Church of St. Mary in Sejny
Sejny
Sejny
Coordinates: 54°7′N 23°22′E / 54.117°N 23.367°E / 54.117; 23.367
Country Poland
Voivodeship Podlaskie Voivodeship
CountySejny County
GminaSejny (urban gmina)
Established16th century
Town rights~1600
Government
  MayorArkadiusz Nowalski
Area
  Total
4.49 km2 (1.73 sq mi)
Population
 (2022)
  Total
5,024
Time zoneUTC+1 (CET)
  Summer (DST)UTC+2 (CEST)
Postal code
16–500
Car platesBSE
Websitehttp://www.sejny.home.pl

Sejny ([ˈsɛi̯nɨ]; Lithuanian: Seinai) is a town in north-eastern Poland and the capital of Sejny County, in Podlaskie Voivodeship, close to the northern border with Lithuania and Belarus. It is located in the eastern part of the Suwałki Lake Area (Polish: Pojezierze Suwalskie), on the Marycha river (Seina in Lithuanian for which the town was named), being a tributary of the Czarna Hańcza. As of 1999 it had almost 6,500 permanent inhabitants, with a strong seasonal increase during the tourist season.