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 Uprising happened on 1919-09-07.
Sejny Priest Seminary was created in 1826.
Sejny Priest Seminary ended in 1926.
The area of Gmina Kodeń is 150.33 square kilometers.
The area of Gmina Zarszyn is 105.96 square kilometers.
The area of Gmina Wisznice is 173 square kilometers.