Province of Hesse-Nassau

Province of Hesse-Nassau
Provinz Hessen-Nassau (German)
Province of Prussia
1868–1944
Flag
Coat of arms

The Province of Hesse-Nassau (red), within the Kingdom of Prussia (blue), within the German Empire
CapitalKassel
Area 
• 1905
15,699.3 km2 (6,061.5 sq mi)
• 1939
16,845 km2 (6,504 sq mi)
Population 
• 1905
2,070,076
• 1939
2,688,922
History 
1868
• Disestablished
1944
Political subdivisionsKassel
Wiesbaden
Preceded by
Succeeded by
Electorate of Hesse
Duchy of Nassau
Free City of Frankfurt
Grand Duchy of Hesse
Kingdom of Bavaria
Province of Kurhessen
Province of Nassau
Today part ofGermany

The Province of Hesse-Nassau (German: Provinz Hessen-Nassau) was a province of the Kingdom of Prussia from 1868 to 1918, then a province of the Free State of Prussia until 1944.

The Prussian province was officially formed in 1868 by a Royal Decree of 7 December 1868, which merged the two administrative districts of Kassel and Wiesbaden; however, it had already come into being through the annexations of Hesse-Kassel, Nassau, and Frankfurt in 1866 and was organized by decrees of March 1867 (concerning the municipal constitutions).