Augustów Governorate
Augustów Governorate was an administrative unit of the Congress Poland.
It was created in 1837 from the Augustów Voivodship, and had the same borders and capital as the voivodship. In 1867 territories of the Augustów Governorate and the Płock Governorate were divided into a smaller Płock Governorate, Suwałki Governorate and recreated Łomża Governorate.It was divided into 7 powiats:
- Biebrzańsk County
- Dąbrowski County
- Kalvarija County
- Łomża County
- Marijampolė County
- Tykociń County
- Wigierski-Sejny County
After 1918, the southern one-third of the governorate was included in Poland, the rest falling to Lithuania.