The area of Gmina Sejny is 218.01 square kilometers.
Gmina Sejny's population is 4,106.
The area of Sejny is 4,490,000.0 square meters.
The area of Sejny County is 856.07 square kilometers.
Sejny was created in 1600.
The population of Sejny is 5,934.
The population of Sejny County is 21,331.
Sejny Priest Seminary was created in 1826.
Sejny Priest Seminary ended in 1926.
Sejny Uprising happened on 1919-09-07.
The area of Gmina Krajenka is 191.79 square kilometers.
The area of Gmina Lutocin is 126.03 square kilometers.
The area of Gmina Turek is 109.42 square kilometers.